166496255 has 4 divisors (see below), whose sum is σ = 199795512. Its totient is φ = 133197000.

The previous prime is 166496227. The next prime is 166496261. The reversal of 166496255 is 552694661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552694661 = 383 ⋅1443067.

It is not a de Polignac number, because 166496255 - 2⁸ = 166495999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16649621 + ... + 16649630.

It is an arithmetic number, because the mean of its divisors is an integer number (49948878).

Almost surely, 2^166496255 is an apocalyptic number.

166496255 is a deficient number, since it is larger than the sum of its proper divisors (33299257).

166496255 is an equidigital number, since it uses as much as digits as its factorization.

166496255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33299256.

The product of its digits is 388800, while the sum is 44.

The square root of 166496255 is about 12903.3427839456. The cubic root of 166496255 is about 550.1335818786.

The spelling of 166496255 in words is "one hundred sixty-six million, four hundred ninety-six thousand, two hundred fifty-five".