166056520 has 32 divisors (see below), whose sum is σ = 427003200. Its totient is φ = 56933568.

The previous prime is 166056511. The next prime is 166056521. The reversal of 166056520 is 25650661.

It is not an unprimeable number, because it can be changed into a prime (166056521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296250 + ... + 296809.

It is an arithmetic number, because the mean of its divisors is an integer number (13343850).

Almost surely, 2^166056520 is an apocalyptic number.

166056520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166056520 is an abundant number, since it is smaller than the sum of its proper divisors (260946680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166056520 is a wasteful number, since it uses less digits than its factorization.

166056520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593077 (or 593073 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 166056520 is about 12886.2919414392. The cubic root of 166056520 is about 549.6488336848.

The spelling of 166056520 in words is "one hundred sixty-six million, fifty-six thousand, five hundred twenty".