167166551 has 2 divisors, whose sum is σ = 167166552. Its totient is φ = 167166550.

The previous prime is 167166547. The next prime is 167166557. The reversal of 167166551 is 155661761.

It is a weak prime.

It is an emirp because it is prime and its reverse (155661761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 167166551 - 2² = 167166547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167166557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83583275 + 83583276.

It is an arithmetic number, because the mean of its divisors is an integer number (83583276).

Almost surely, 2^167166551 is an apocalyptic number.

167166551 is a deficient number, since it is larger than the sum of its proper divisors (1).

167166551 is an equidigital number, since it uses as much as digits as its factorization.

167166551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 38.

The square root of 167166551 is about 12929.2904290993. The cubic root of 167166551 is about 550.8708528977.

The spelling of 167166551 in words is "one hundred sixty-seven million, one hundred sixty-six thousand, five hundred fifty-one".