164972572 has 6 divisors (see below), whose sum is σ = 288702008. Its totient is φ = 82486284.

The previous prime is 164972569. The next prime is 164972579. The reversal of 164972572 is 275279461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164972579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20621568 + ... + 20621575.

Almost surely, 2^164972572 is an apocalyptic number.

It is an amenable number.

164972572 is a deficient number, since it is larger than the sum of its proper divisors (123729436).

164972572 is a wasteful number, since it uses less digits than its factorization.

164972572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41243147 (or 41243145 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 164972572 is about 12844.1649008412. The cubic root of 164972572 is about 548.4502621906.

The spelling of 164972572 in words is "one hundred sixty-four million, nine hundred seventy-two thousand, five hundred seventy-two".