56787272 has 16 divisors (see below), whose sum is σ = 107760240. Its totient is φ = 28051216.

The previous prime is 56787271. The next prime is 56787281. The reversal of 56787272 is 27278765.

It is a happy number.

It is a super-2 number, since 2×56787272² = 6449588522403968, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56787271) 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, 42098 + ... + 43425.

It is an arithmetic number, because the mean of its divisors is an integer number (6735015).

Almost surely, 2^56787272 is an apocalyptic number.

It is an amenable number.

56787272 is a deficient number, since it is larger than the sum of its proper divisors (50972968).

56787272 is a wasteful number, since it uses less digits than its factorization.

56787272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85612 (or 85608 counting only the distinct ones).

The product of its digits is 329280, while the sum is 44.

The square root of 56787272 is about 7535.7330101325. The cubic root of 56787272 is about 384.3707537548.

The spelling of 56787272 in words is "fifty-six million, seven hundred eighty-seven thousand, two hundred seventy-two".