166979055 has 16 divisors (see below), whose sum is σ = 268369920. Its totient is φ = 88654368.

The previous prime is 166979053. The next prime is 166979063. The reversal of 166979055 is 550979661.

It is not a de Polignac number, because 166979055 - 2¹ = 166979053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166978995 and 166979013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166979053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21615 + ... + 28304.

It is an arithmetic number, because the mean of its divisors is an integer number (16773120).

Almost surely, 2^166979055 is an apocalyptic number.

166979055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166979055 is a deficient number, since it is larger than the sum of its proper divisors (101390865).

166979055 is a wasteful number, since it uses less digits than its factorization.

166979055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50150.

The product of its (nonzero) digits is 510300, while the sum is 48.

The square root of 166979055 is about 12922.0375715287. The cubic root of 166979055 is about 550.6648214069.

It can be divided in two parts, 16697 and 9055, that added together give a palindrome (25752).

The spelling of 166979055 in words is "one hundred sixty-six million, nine hundred seventy-nine thousand, fifty-five".