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5251044031 = 17308884943
BaseRepresentation
bin1001110001111110…
…01001001010111111
3111112221202200020021
410320333021022333
541223231402111
62225020033011
7244061065162
oct47077111277
914487680207
105251044031
112255094112
121026692767
13658b7855c
1437b56dad9
1520aee4d71
hex138fc92bf

5251044031 has 4 divisors (see below), whose sum is σ = 5559928992. Its totient is φ = 4942159072.

The previous prime is 5251044023. The next prime is 5251044179. The reversal of 5251044031 is 1304401525.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5251044031 - 23 = 5251044023 is a prime.

It is a super-2 number, since 2×52510440312 = 55146926831001457922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5251043987 and 5251044005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251044431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154442455 + ... + 154442488.

It is an arithmetic number, because the mean of its divisors is an integer number (1389982248).

Almost surely, 25251044031 is an apocalyptic number.

5251044031 is a deficient number, since it is larger than the sum of its proper divisors (308884961).

5251044031 is a wasteful number, since it uses less digits than its factorization.

5251044031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308884960.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 5251044031 is about 72464.0878711655. The cubic root of 5251044031 is about 1738.1285236825.

Adding to 5251044031 its reverse (1304401525), we get a palindrome (6555445556).

The spelling of 5251044031 in words is "five billion, two hundred fifty-one million, forty-four thousand, thirty-one".

Divisors: 1 17 308884943 5251044031