165355542 has 48 divisors (see below), whose sum is σ = 400392720. Its totient is φ = 48883200.

The previous prime is 165355529. The next prime is 165355559. The reversal of 165355542 is 245553561.

165355542 is a `hidden beast` number, since 1 + 65 + 3 + 55 + 542 = 666.

It is a super-2 number, since 2×165355542² = 54684910540227528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165355497 and 165355506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2067 + ... + 18302.

It is an arithmetic number, because the mean of its divisors is an integer number (8341515).

Almost surely, 2^165355542 is an apocalyptic number.

165355542 is an abundant number, since it is smaller than the sum of its proper divisors (235037178).

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

165355542 is a wasteful number, since it uses less digits than its factorization.

165355542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20429 (or 20426 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 165355542 is about 12859.0645849533. The cubic root of 165355542 is about 548.8743279885.

The spelling of 165355542 in words is "one hundred sixty-five million, three hundred fifty-five thousand, five hundred forty-two".