56751 has 4 divisors (see below), whose sum is σ = 75672. Its totient is φ = 37832.

The previous prime is 56747. The next prime is 56767. The reversal of 56751 is 15765.

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

It is a cyclic number.

It is not a de Polignac number, because 56751 - 2² = 56747 is a prime.

It is a D-number.

56751 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56701) 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, 9456 + ... + 9461.

It is an arithmetic number, because the mean of its divisors is an integer number (18918).

2⁵⁶⁷⁵¹ is an apocalyptic number.

56751 is a deficient number, since it is larger than the sum of its proper divisors (18921).

56751 is a wasteful number, since it uses less digits than its factorization.

56751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18920.

The product of its digits is 1050, while the sum is 24.

The square root of 56751 is about 238.2246838596. The cubic root of 56751 is about 38.4288899348.

The spelling of 56751 in words is "fifty-six thousand, seven hundred fifty-one".