56961438 has 32 divisors (see below), whose sum is σ = 115758720. Its totient is φ = 18684000.

The previous prime is 56961433. The next prime is 56961467. The reversal of 56961438 is 83416965.

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

It is a self number, because there is not a number n which added to its sum of digits gives 56961438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56961431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163981 + ... + 164327.

It is an arithmetic number, because the mean of its divisors is an integer number (3617460).

Almost surely, 2^56961438 is an apocalyptic number.

56961438 is an abundant number, since it is smaller than the sum of its proper divisors (58797282).

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

56961438 is a wasteful number, since it uses less digits than its factorization.

56961438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

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

The square root of 56961438 is about 7547.2801723535. The cubic root of 56961438 is about 384.7633064727.

The spelling of 56961438 in words is "fifty-six million, nine hundred sixty-one thousand, four hundred thirty-eight".