165005157 has 32 divisors (see below), whose sum is σ = 236897280. Its totient is φ = 101928960.

The previous prime is 165005143. The next prime is 165005161. The reversal of 165005157 is 751500561.

It is not a de Polignac number, because 165005157 - 2⁸ = 165004901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165005117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520363 + ... + 520679.

It is an arithmetic number, because the mean of its divisors is an integer number (7403040).

Almost surely, 2^165005157 is an apocalyptic number.

It is an amenable number.

165005157 is a deficient number, since it is larger than the sum of its proper divisors (71892123).

165005157 is a wasteful number, since it uses less digits than its factorization.

165005157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 165005157 is about 12845.4333130494. The cubic root of 165005157 is about 548.4863693549.

The spelling of 165005157 in words is "one hundred sixty-five million, five thousand, one hundred fifty-seven".