56391436 has 12 divisors (see below), whose sum is σ = 98773920. Its totient is φ = 28170320.

The previous prime is 56391371. The next prime is 56391437. The reversal of 56391436 is 63419365.

It is a junction number, because it is equal to n+sod(n) for n = 56391395 and 56391404.

It is not an unprimeable number, because it can be changed into a prime (56391437) 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, 820 + ... + 10651.

It is an arithmetic number, because the mean of its divisors is an integer number (8231160).

Almost surely, 2^56391436 is an apocalyptic number.

It is an amenable number.

56391436 is a deficient number, since it is larger than the sum of its proper divisors (42382484).

56391436 is a wasteful number, since it uses less digits than its factorization.

56391436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12704 (or 12702 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The square root of 56391436 is about 7509.4231469534. The cubic root of 56391436 is about 383.4755844246.

The spelling of 56391436 in words is "fifty-six million, three hundred ninety-one thousand, four hundred thirty-six".