165525524 has 6 divisors (see below), whose sum is σ = 289669674. Its totient is φ = 82762760.

The previous prime is 165525467. The next prime is 165525589. The reversal of 165525524 is 425525561.

165525524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 165379600 + 145924 = 12860^2 + 382^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20690687 + ... + 20690694.

It is an arithmetic number, because the mean of its divisors is an integer number (48278279).

Almost surely, 2^165525524 is an apocalyptic number.

It is an amenable number.

165525524 is a deficient number, since it is larger than the sum of its proper divisors (124144150).

165525524 is a wasteful number, since it uses less digits than its factorization.

165525524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41381385 (or 41381383 counting only the distinct ones).

The product of its digits is 60000, while the sum is 35.

The square root of 165525524 is about 12865.6723104547. The cubic root of 165525524 is about 549.0623406458.

The spelling of 165525524 in words is "one hundred sixty-five million, five hundred twenty-five thousand, five hundred twenty-four".