56161642 has 16 divisors (see below), whose sum is σ = 90122760. Its totient is φ = 26155008.

The previous prime is 56161627. The next prime is 56161657. The reversal of 56161642 is 24616165.

It is an interprime number because it is at equal distance from previous prime (56161627) and next prime (56161657).

It can be written as a sum of positive squares in 4 ways, for example, as 55487601 + 674041 = 7449^2 + 821^2 .

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, 5217 + ... + 11812.

Almost surely, 2^56161642 is an apocalyptic number.

56161642 is a deficient number, since it is larger than the sum of its proper divisors (33961118).

56161642 is a wasteful number, since it uses less digits than its factorization.

56161642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17145.

The product of its digits is 8640, while the sum is 31.

The square root of 56161642 is about 7494.1071516225. The cubic root of 56161642 is about 382.9539901146.

The spelling of 56161642 in words is "fifty-six million, one hundred sixty-one thousand, six hundred forty-two".