56357249 has 16 divisors (see below), whose sum is σ = 64680000. Its totient is φ = 48672576.

The previous prime is 56357239. The next prime is 56357263. The reversal of 56357249 is 94275365.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56357249 is a prime.

It is a super-2 number, since 2×56357249² = 6352279029696002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56357209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19127 + ... + 21875.

It is an arithmetic number, because the mean of its divisors is an integer number (4042500).

Almost surely, 2^56357249 is an apocalyptic number.

It is an amenable number.

56357249 is a deficient number, since it is larger than the sum of its proper divisors (8322751).

56357249 is a wasteful number, since it uses less digits than its factorization.

56357249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864.

The product of its digits is 226800, while the sum is 41.

The square root of 56357249 is about 7507.1465284754. The cubic root of 56357249 is about 383.3980754333.

The spelling of 56357249 in words is "fifty-six million, three hundred fifty-seven thousand, two hundred forty-nine".