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5389381 = 31173851
BaseRepresentation
bin10100100011110001000101
3101010210211201
4110203301011
52334430011
6311302501
763544324
oct24436105
911123751
105389381
113051138
12197aa31
1311690aa
14a040bb
15716cc1
hex523c45

5389381 has 4 divisors (see below), whose sum is σ = 5563264. Its totient is φ = 5215500.

The previous prime is 5389379. The next prime is 5389387. The reversal of 5389381 is 1839835.

5389381 = T1894 + T1895 + T1896.

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 5389381 - 21 = 5389379 is a prime.

It is a super-2 number, since 2×53893812 = 58090855126322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5389381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5389387) 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, 86895 + ... + 86956.

It is an arithmetic number, because the mean of its divisors is an integer number (1390816).

Almost surely, 25389381 is an apocalyptic number.

5389381 is the 1896-th centered triangular number.

It is an amenable number.

5389381 is a deficient number, since it is larger than the sum of its proper divisors (173883).

5389381 is a wasteful number, since it uses less digits than its factorization.

5389381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173882.

The product of its digits is 25920, while the sum is 37.

The square root of 5389381 is about 2321.5040383338. The cubic root of 5389381 is about 175.3259882935.

The spelling of 5389381 in words is "five million, three hundred eighty-nine thousand, three hundred eighty-one".

Divisors: 1 31 173851 5389381