56381946 has 16 divisors (see below), whose sum is σ = 112883808. Its totient is φ = 18774000.

The previous prime is 56381933. The next prime is 56381951. The reversal of 56381946 is 64918365.

It is a junction number, because it is equal to n+sod(n) for n = 56381898 and 56381907.

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, 1836 + ... + 10776.

It is an arithmetic number, because the mean of its divisors is an integer number (7055238).

Almost surely, 2^56381946 is an apocalyptic number.

56381946 is an abundant number, since it is smaller than the sum of its proper divisors (56501862).

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

56381946 is a wasteful number, since it uses less digits than its factorization.

56381946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9997.

The product of its digits is 155520, while the sum is 42.

The square root of 56381946 is about 7508.7912475977. The cubic root of 56381946 is about 383.4540717759.

The spelling of 56381946 in words is "fifty-six million, three hundred eighty-one thousand, nine hundred forty-six".