165958056 has 48 divisors (see below), whose sum is σ = 490332960. Its totient is φ = 50290080.

The previous prime is 165958043. The next prime is 165958069. The reversal of 165958056 is 650859561.

It is a happy number.

165958056 is a `hidden beast` number, since 1 + 6 + 595 + 8 + 0 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (165958043) and next prime (165958069).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103980 + ... + 105563.

It is an arithmetic number, because the mean of its divisors is an integer number (10215270).

Almost surely, 2^165958056 is an apocalyptic number.

It is an amenable number.

165958056 is an abundant number, since it is smaller than the sum of its proper divisors (324374904).

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

165958056 is a wasteful number, since it uses less digits than its factorization.

165958056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209566 (or 209559 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 165958056 is about 12882.4708810073. The cubic root of 165958056 is about 549.5401732454.

The spelling of 165958056 in words is "one hundred sixty-five million, nine hundred fifty-eight thousand, fifty-six".