56449940 has 24 divisors (see below), whose sum is σ = 118752480. Its totient is φ = 22540448.

The previous prime is 56449937. The next prime is 56449957. The reversal of 56449940 is 4994465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11039 + ... + 15321.

It is an arithmetic number, because the mean of its divisors is an integer number (4948020).

Almost surely, 2^56449940 is an apocalyptic number.

It is an amenable number.

56449940 is an abundant number, since it is smaller than the sum of its proper divisors (62302540).

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

56449940 is a wasteful number, since it uses less digits than its factorization.

56449940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951 (or 4949 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 56449940 is about 7513.3175095959. The cubic root of 56449940 is about 383.6081524362.

The spelling of 56449940 in words is "fifty-six million, four hundred forty-nine thousand, nine hundred forty".