56455751 has 4 divisors (see below), whose sum is σ = 61588104. Its totient is φ = 51323400.

The previous prime is 56455739. The next prime is 56455753. The reversal of 56455751 is 15755465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56455751 is a prime.

It is a super-3 number, since 3×56455751³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56455753) 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, 2566160 + ... + 2566181.

It is an arithmetic number, because the mean of its divisors is an integer number (15397026).

Almost surely, 2^56455751 is an apocalyptic number.

56455751 is a deficient number, since it is larger than the sum of its proper divisors (5132353).

56455751 is a wasteful number, since it uses less digits than its factorization.

56455751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132352.

The product of its digits is 105000, while the sum is 38.

The square root of 56455751 is about 7513.7042129698. The cubic root of 56455751 is about 383.6213149567.

The spelling of 56455751 in words is "fifty-six million, four hundred fifty-five thousand, seven hundred fifty-one".