56745251 has 8 divisors (see below), whose sum is σ = 58527744. Its totient is φ = 54983880.

The previous prime is 56745239. The next prime is 56745287. The reversal of 56745251 is 15254765.

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 56745251 - 2¹⁰ = 56744227 is a prime.

It is a super-2 number, since 2×56745251² = 6440047022106002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56715251) 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, 266 + ... + 10656.

It is an arithmetic number, because the mean of its divisors is an integer number (7315968).

Almost surely, 2^56745251 is an apocalyptic number.

56745251 is a deficient number, since it is larger than the sum of its proper divisors (1782493).

56745251 is a wasteful number, since it uses less digits than its factorization.

56745251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561.

The product of its digits is 42000, while the sum is 35.

The square root of 56745251 is about 7532.9443778645. The cubic root of 56745251 is about 384.2759224753.

The spelling of 56745251 in words is "fifty-six million, seven hundred forty-five thousand, two hundred fifty-one".