167521249 has 15 divisors (see below), whose sum is σ = 199511457. Its totient is φ = 140250348.

The previous prime is 167521223. The next prime is 167521261. The reversal of 167521249 is 942125761.

The square root of 167521249 is 12943.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 167521249 - 2⁵ = 167521217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167521219) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3895822 + ... + 3895864.

Almost surely, 2^167521249 is an apocalyptic number.

167521249 is the 12943-rd square number.

167521249 is the 6472-nd centered octagonal number.

It is an amenable number.

167521249 is a deficient number, since it is larger than the sum of its proper divisors (31990208).

167521249 is an frugal number, since it uses more digits than its factorization.

167521249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 50 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The cubic root of 167521249 is about 551.2601946548.

The spelling of 167521249 in words is "one hundred sixty-seven million, five hundred twenty-one thousand, two hundred forty-nine".