56105739 has 6 divisors (see below), whose sum is σ = 81041636. Its totient is φ = 37403820.

The previous prime is 56105737. The next prime is 56105773. The reversal of 56105739 is 93750165.

It is a happy number.

56105739 is a `hidden beast` number, since 5 + 610 + 5 + 7 + 39 = 666.

It is not a de Polignac number, because 56105739 - 2¹ = 56105737 is a prime.

It is a super-2 number, since 2×56105739² = 6295707897472242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56105737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3116977 + ... + 3116994.

Almost surely, 2^56105739 is an apocalyptic number.

56105739 is a deficient number, since it is larger than the sum of its proper divisors (24935897).

56105739 is a wasteful number, since it uses less digits than its factorization.

56105739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233977 (or 6233974 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 56105739 is about 7490.3764257880. The cubic root of 56105739 is about 382.8268844763.

The spelling of 56105739 in words is "fifty-six million, one hundred five thousand, seven hundred thirty-nine".