167132521 has 4 divisors (see below), whose sum is σ = 167323972. Its totient is φ = 166941072.

The previous prime is 167132507. The next prime is 167132527. The reversal of 167132521 is 125231761.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100220121 + 66912400 = 10011^2 + 8180^2 .

It is a cyclic number.

It is not a de Polignac number, because 167132521 - 2⁵ = 167132489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 167132521.

It is not an unprimeable number, because it can be changed into a prime (167132527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94410 + ... + 96163.

It is an arithmetic number, because the mean of its divisors is an integer number (41830993).

Almost surely, 2^167132521 is an apocalyptic number.

It is an amenable number.

167132521 is a deficient number, since it is larger than the sum of its proper divisors (191451).

167132521 is an equidigital number, since it uses as much as digits as its factorization.

167132521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191450.

The product of its digits is 2520, while the sum is 28.

The square root of 167132521 is about 12927.9743579572. The cubic root of 167132521 is about 550.8334702052.

The spelling of 167132521 in words is "one hundred sixty-seven million, one hundred thirty-two thousand, five hundred twenty-one".