166252279 has 2 divisors, whose sum is σ = 166252280. Its totient is φ = 166252278.

The previous prime is 166252249. The next prime is 166252291. The reversal of 166252279 is 972252661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166252279 - 2¹³ = 166244087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166252249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83126139 + 83126140.

It is an arithmetic number, because the mean of its divisors is an integer number (83126140).

Almost surely, 2^166252279 is an apocalyptic number.

166252279 is a deficient number, since it is larger than the sum of its proper divisors (1).

166252279 is an equidigital number, since it uses as much as digits as its factorization.

166252279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 166252279 is about 12893.8853337541. The cubic root of 166252279 is about 549.8647369851.

The spelling of 166252279 in words is "one hundred sixty-six million, two hundred fifty-two thousand, two hundred seventy-nine".