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5251369 = 31169399
BaseRepresentation
bin10100000010000100101001
3100212210112011
4110002010221
52321020434
6304315521
762431054
oct24020451
910783464
105251369
112a67482
121912ba1
13111b326
149a9a9b
156dae64
hex502129

5251369 has 4 divisors (see below), whose sum is σ = 5420800. Its totient is φ = 5081940.

The previous prime is 5251361. The next prime is 5251409. The reversal of 5251369 is 9631525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5251369 - 23 = 5251361 is a prime.

It is a super-2 number, since 2×52513692 = 55153752748322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 169399 = 5251369 / (5 + 2 + 5 + 1 + 3 + 6 + 9).

It is a Duffinian number.

5251369 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5251369.

It is not an unprimeable number, because it can be changed into a prime (5251361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84669 + ... + 84730.

It is an arithmetic number, because the mean of its divisors is an integer number (1355200).

Almost surely, 25251369 is an apocalyptic number.

It is an amenable number.

5251369 is a deficient number, since it is larger than the sum of its proper divisors (169431).

5251369 is a wasteful number, since it uses less digits than its factorization.

5251369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169430.

The product of its digits is 8100, while the sum is 31.

The square root of 5251369 is about 2291.5865682972. The cubic root of 5251369 is about 173.8164378536.

The spelling of 5251369 in words is "five million, two hundred fifty-one thousand, three hundred sixty-nine".

Divisors: 1 31 169399 5251369