56451216 has 40 divisors (see below), whose sum is σ = 146111680. Its totient is φ = 18781056.

The previous prime is 56451193. The next prime is 56451221. The reversal of 56451216 is 61215465.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38790 + ... + 40218.

It is an arithmetic number, because the mean of its divisors is an integer number (3652792).

Almost surely, 2^56451216 is an apocalyptic number.

It is an amenable number.

56451216 is an abundant number, since it is smaller than the sum of its proper divisors (89660464).

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

56451216 is a wasteful number, since it uses less digits than its factorization.

56451216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263 (or 2257 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 56451216 is about 7513.4024250003. The cubic root of 56451216 is about 383.6110427865.

The spelling of 56451216 in words is "fifty-six million, four hundred fifty-one thousand, two hundred sixteen".