56551446 has 64 divisors (see below), whose sum is σ = 145474560. Its totient is φ = 16148808.

The previous prime is 56551433. The next prime is 56551483. The reversal of 56551446 is 64415565.

56551446 is a `hidden beast` number, since 565 + 51 + 4 + 46 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56551446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29695 + ... + 31541.

It is an arithmetic number, because the mean of its divisors is an integer number (2273040).

Almost surely, 2^56551446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56551446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72737280).

56551446 is an abundant number, since it is smaller than the sum of its proper divisors (88923114).

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

56551446 is an equidigital number, since it uses as much as digits as its factorization.

56551446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877 (or 1859 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 56551446 is about 7520.0695475507. The cubic root of 56551446 is about 383.8379443142.

The spelling of 56551446 in words is "fifty-six million, five hundred fifty-one thousand, four hundred forty-six".