165252051 has 6 divisors (see below), whose sum is σ = 238697420. Its totient is φ = 110168028.

The previous prime is 165252049. The next prime is 165252107. The reversal of 165252051 is 150252561.

165252051 is a `hidden beast` number, since 1 + 652 + 5 + 2 + 0 + 5 + 1 = 666.

It is not a de Polignac number, because 165252051 - 2¹ = 165252049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165252001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9180661 + ... + 9180678.

Almost surely, 2^165252051 is an apocalyptic number.

165252051 is a deficient number, since it is larger than the sum of its proper divisors (73445369).

165252051 is a wasteful number, since it uses less digits than its factorization.

165252051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18361345 (or 18361342 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 165252051 is about 12855.0399065892. The cubic root of 165252051 is about 548.7597961801.

The spelling of 165252051 in words is "one hundred sixty-five million, two hundred fifty-two thousand, fifty-one".