56251404 has 36 divisors (see below), whose sum is σ = 155118600. Its totient is φ = 17045760.

The previous prime is 56251369. The next prime is 56251409. The reversal of 56251404 is 40415265.

56251404 is a `hidden beast` number, since 5 + 6 + 251 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56251409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70629 + ... + 71420.

It is an arithmetic number, because the mean of its divisors is an integer number (4308850).

Almost surely, 2^56251404 is an apocalyptic number.

It is an amenable number.

56251404 is an abundant number, since it is smaller than the sum of its proper divisors (98867196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56251404 is a wasteful number, since it uses less digits than its factorization.

56251404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142070 (or 142065 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 56251404 is about 7500.0935994159. The cubic root of 56251404 is about 383.1579040175.

Adding to 56251404 its reverse (40415265), we get a palindrome (96666669).

The spelling of 56251404 in words is "fifty-six million, two hundred fifty-one thousand, four hundred four".