56400523 has 8 divisors (see below), whose sum is σ = 57164400. Its totient is φ = 55642080.

The previous prime is 56400503. The next prime is 56400527. The reversal of 56400523 is 32500465.

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 56400523 - 2⁹ = 56400011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56400527) 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, 22188 + ... + 24598.

It is an arithmetic number, because the mean of its divisors is an integer number (7145550).

Almost surely, 2^56400523 is an apocalyptic number.

56400523 is a deficient number, since it is larger than the sum of its proper divisors (763877).

56400523 is a wasteful number, since it uses less digits than its factorization.

56400523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 56400523 is about 7510.0281623973. The cubic root of 56400523 is about 383.4961812606.

Adding to 56400523 its reverse (32500465), we get a palindrome (88900988).

The spelling of 56400523 in words is "fifty-six million, four hundred thousand, five hundred twenty-three".