56409165 has 48 divisors (see below), whose sum is σ = 101088000. Its totient is φ = 29083776.

The previous prime is 56409161. The next prime is 56409169. The reversal of 56409165 is 56190465.

56409165 is a `hidden beast` number, since 5 + 640 + 9 + 1 + 6 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (56409161) and next prime (56409169).

It is not a de Polignac number, because 56409165 - 2² = 56409161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56409161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 315046 + ... + 315224.

It is an arithmetic number, because the mean of its divisors is an integer number (2106000).

Almost surely, 2^56409165 is an apocalyptic number.

It is an amenable number.

56409165 is a deficient number, since it is larger than the sum of its proper divisors (44678835).

56409165 is a wasteful number, since it uses less digits than its factorization.

56409165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 56409165 is about 7510.6035043797. The cubic root of 56409165 is about 383.5157673954.

The spelling of 56409165 in words is "fifty-six million, four hundred nine thousand, one hundred sixty-five".