165572151 has 8 divisors (see below), whose sum is σ = 226729584. Its totient is φ = 107398080.

The previous prime is 165572131. The next prime is 165572153. The reversal of 165572151 is 151275561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165572151 - 2¹⁰ = 165571127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165572153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745710 + ... + 745931.

It is an arithmetic number, because the mean of its divisors is an integer number (28341198).

Almost surely, 2^165572151 is an apocalyptic number.

165572151 is a deficient number, since it is larger than the sum of its proper divisors (61157433).

165572151 is a wasteful number, since it uses less digits than its factorization.

165572151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491681.

The product of its digits is 10500, while the sum is 33.

The square root of 165572151 is about 12867.4842529533. The cubic root of 165572151 is about 549.1138910565.

The spelling of 165572151 in words is "one hundred sixty-five million, five hundred seventy-two thousand, one hundred fifty-one".