166498255 has 32 divisors (see below), whose sum is σ = 263761920. Its totient is φ = 97681920.

The previous prime is 166498247. The next prime is 166498259. The reversal of 166498255 is 552894661.

It is not a de Polignac number, because 166498255 - 2³ = 166498247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166498259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6175 + ... + 19264.

It is an arithmetic number, because the mean of its divisors is an integer number (8242560).

Almost surely, 2^166498255 is an apocalyptic number.

166498255 is a deficient number, since it is larger than the sum of its proper divisors (97263665).

166498255 is a wasteful number, since it uses less digits than its factorization.

166498255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25479.

The product of its digits is 518400, while the sum is 46.

The square root of 166498255 is about 12903.4202830102. The cubic root of 166498255 is about 550.1357846564.

It can be divided in two parts, 166498 and 255, that added together give a triangular number (166753 = T₅₇₇).

The spelling of 166498255 in words is "one hundred sixty-six million, four hundred ninety-eight thousand, two hundred fifty-five".