165374556 has 24 divisors (see below), whose sum is σ = 406183680. Its totient is φ = 52223472.

The previous prime is 165374543. The next prime is 165374557. The reversal of 165374556 is 655473561.

165374556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165374557) 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, 362436 + ... + 362891.

It is an arithmetic number, because the mean of its divisors is an integer number (16924320).

Almost surely, 2^165374556 is an apocalyptic number.

It is an amenable number.

165374556 is an abundant number, since it is smaller than the sum of its proper divisors (240809124).

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

165374556 is a wasteful number, since it uses less digits than its factorization.

165374556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725353 (or 725351 counting only the distinct ones).

The product of its digits is 378000, while the sum is 42.

The square root of 165374556 is about 12859.8038865295. The cubic root of 165374556 is about 548.8953652765.

The spelling of 165374556 in words is "one hundred sixty-five million, three hundred seventy-four thousand, five hundred fifty-six".