56400747 has 32 divisors (see below), whose sum is σ = 86732352. Its totient is φ = 32292864.

The previous prime is 56400733. The next prime is 56400787. The reversal of 56400747 is 74700465.

It is not a de Polignac number, because 56400747 - 2⁴ = 56400731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56400787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63873 + ... + 64749.

It is an arithmetic number, because the mean of its divisors is an integer number (2710386).

Almost surely, 2^56400747 is an apocalyptic number.

56400747 is a deficient number, since it is larger than the sum of its proper divisors (30331605).

56400747 is a wasteful number, since it uses less digits than its factorization.

56400747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 56400747 is about 7510.0430757753. The cubic root of 56400747 is about 383.4966889570.

The spelling of 56400747 in words is "fifty-six million, four hundred thousand, seven hundred forty-seven".