56681304 has 16 divisors (see below), whose sum is σ = 141703320. Its totient is φ = 18893760.

The previous prime is 56681297. The next prime is 56681309. The reversal of 56681304 is 40318665.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56681309) 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, 1180837 + ... + 1180884.

Almost surely, 2^56681304 is an apocalyptic number.

It is an amenable number.

56681304 is an abundant number, since it is smaller than the sum of its proper divisors (85022016).

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

56681304 is a wasteful number, since it uses less digits than its factorization.

56681304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361730 (or 2361726 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 56681304 is about 7528.6986923372. The cubic root of 56681304 is about 384.1315196197.

Adding to 56681304 its reverse (40318665), we get a palindrome (96999969).

The spelling of 56681304 in words is "fifty-six million, six hundred eighty-one thousand, three hundred four".