56422161 has 12 divisors (see below), whose sum is σ = 81580980. Its totient is φ = 37576800.

The previous prime is 56422159. The next prime is 56422169. The reversal of 56422161 is 16122465.

56422161 is a `hidden beast` number, since 5 + 642 + 2 + 16 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25553025 + 30869136 = 5055^2 + 5556^2 .

It is not a de Polignac number, because 56422161 - 2¹ = 56422159 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56422169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8511 + ... + 13611.

It is an arithmetic number, because the mean of its divisors is an integer number (6798415).

Almost surely, 2^56422161 is an apocalyptic number.

It is an amenable number.

56422161 is a deficient number, since it is larger than the sum of its proper divisors (25158819).

56422161 is a wasteful number, since it uses less digits than its factorization.

56422161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336 (or 6333 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 56422161 is about 7511.4686313663. The cubic root of 56422161 is about 383.5452176228.

The spelling of 56422161 in words is "fifty-six million, four hundred twenty-two thousand, one hundred sixty-one".