167252621 has 2 divisors, whose sum is σ = 167252622. Its totient is φ = 167252620.

The previous prime is 167252593. The next prime is 167252623. The reversal of 167252621 is 126252761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164737225 + 2515396 = 12835^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 167252621 - 2⁶ = 167252557 is a prime.

Together with 167252623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167252623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83626310 + 83626311.

It is an arithmetic number, because the mean of its divisors is an integer number (83626311).

Almost surely, 2^167252621 is an apocalyptic number.

It is an amenable number.

167252621 is a deficient number, since it is larger than the sum of its proper divisors (1).

167252621 is an equidigital number, since it uses as much as digits as its factorization.

167252621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 167252621 is about 12932.6184896950. The cubic root of 167252621 is about 550.9653800205.

The spelling of 167252621 in words is "one hundred sixty-seven million, two hundred fifty-two thousand, six hundred twenty-one".