56442169 has 6 divisors (see below), whose sum is σ = 65657274. Its totient is φ = 48378960.

The previous prime is 56442151. The next prime is 56442203. The reversal of 56442169 is 96124465.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 3952144 = 7245^2 + 1988^2 .

It is not a de Polignac number, because 56442169 - 2¹³ = 56433977 is a prime.

It is a super-2 number, since 2×56442169² = 6371436882849122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56442469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 575892 + ... + 575989.

It is an arithmetic number, because the mean of its divisors is an integer number (10942879).

Almost surely, 2^56442169 is an apocalyptic number.

It is an amenable number.

56442169 is a deficient number, since it is larger than the sum of its proper divisors (9215105).

56442169 is a wasteful number, since it uses less digits than its factorization.

56442169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151895 (or 1151888 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 56442169 is about 7512.8003434139. The cubic root of 56442169 is about 383.5905488996.

It can be divided in two parts, 56 and 442169, that added together give a square (442225 = 665²).

The spelling of 56442169 in words is "fifty-six million, four hundred forty-two thousand, one hundred sixty-nine".