56351257 has 8 divisors (see below), whose sum is σ = 56814912. Its totient is φ = 55890000.

The previous prime is 56351249. The next prime is 56351279. The reversal of 56351257 is 75215365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56351257 - 2³ = 56351249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56321257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115468 + ... + 115954.

It is an arithmetic number, because the mean of its divisors is an integer number (7101864).

Almost surely, 2^56351257 is an apocalyptic number.

It is an amenable number.

56351257 is a deficient number, since it is larger than the sum of its proper divisors (463655).

56351257 is a wasteful number, since it uses less digits than its factorization.

56351257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199.

The product of its digits is 31500, while the sum is 34.

The square root of 56351257 is about 7506.7474314779. The cubic root of 56351257 is about 383.3844871033.

The spelling of 56351257 in words is "fifty-six million, three hundred fifty-one thousand, two hundred fifty-seven".