167272991 has 2 divisors, whose sum is σ = 167272992. Its totient is φ = 167272990.

The previous prime is 167272961. The next prime is 167273009. The reversal of 167272991 is 199272761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 167272991 - 2¹⁰ = 167271967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167272901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83636495 + 83636496.

It is an arithmetic number, because the mean of its divisors is an integer number (83636496).

Almost surely, 2^167272991 is an apocalyptic number.

167272991 is a deficient number, since it is larger than the sum of its proper divisors (1).

167272991 is an equidigital number, since it uses as much as digits as its factorization.

167272991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 44.

The square root of 167272991 is about 12933.4060092460. The cubic root of 167272991 is about 550.9877468034.

The spelling of 167272991 in words is "one hundred sixty-seven million, two hundred seventy-two thousand, nine hundred ninety-one".