165582051 has 4 divisors (see below), whose sum is σ = 220776072. Its totient is φ = 110388032.

The previous prime is 165582047. The next prime is 165582059. The reversal of 165582051 is 150285561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165582051 - 2² = 165582047 is a prime.

It is a super-2 number, since 2×165582051² = 54834831226733202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165582059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27597006 + ... + 27597011.

It is an arithmetic number, because the mean of its divisors is an integer number (55194018).

Almost surely, 2^165582051 is an apocalyptic number.

165582051 is a deficient number, since it is larger than the sum of its proper divisors (55194021).

165582051 is an equidigital number, since it uses as much as digits as its factorization.

165582051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55194020.

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 165582051 is about 12867.8689377845. The cubic root of 165582051 is about 549.1248351659.

The spelling of 165582051 in words is "one hundred sixty-five million, five hundred eighty-two thousand, fifty-one".