56137216 has 40 divisors (see below), whose sum is σ = 113602104. Its totient is φ = 27709440.

The previous prime is 56137199. The next prime is 56137253. The reversal of 56137216 is 61273165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41836 + ... + 43156.

Almost surely, 2^56137216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56137216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56801052).

56137216 is an abundant number, since it is smaller than the sum of its proper divisors (57464888).

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

56137216 is an equidigital number, since it uses as much as digits as its factorization.

56137216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1406 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 56137216 is about 7492.4772939262. The cubic root of 56137216 is about 382.8984635414.

The spelling of 56137216 in words is "fifty-six million, one hundred thirty-seven thousand, two hundred sixteen".