166211054 has 16 divisors (see below), whose sum is σ = 255563856. Its totient is φ = 81048000.

The previous prime is 166211053. The next prime is 166211063. The reversal of 166211054 is 450112661.

It is a super-2 number, since 2×166211054² = 55252228943581832, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166211051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7394 + ... + 19674.

It is an arithmetic number, because the mean of its divisors is an integer number (15972741).

Almost surely, 2^166211054 is an apocalyptic number.

166211054 is a deficient number, since it is larger than the sum of its proper divisors (89352802).

166211054 is a wasteful number, since it uses less digits than its factorization.

166211054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12451.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 166211054 is about 12892.2866086664. The cubic root of 166211054 is about 549.8192838784.

The spelling of 166211054 in words is "one hundred sixty-six million, two hundred eleven thousand, fifty-four".