166616552 has 16 divisors (see below), whose sum is σ = 316807200. Its totient is φ = 82134640.

The previous prime is 166616543. The next prime is 166616563. The reversal of 166616552 is 255616661.

It is a super-2 number, since 2×166616552² = 55522150800737408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146102 + ... + 147237.

It is an arithmetic number, because the mean of its divisors is an integer number (19800450).

Almost surely, 2^166616552 is an apocalyptic number.

It is an amenable number.

166616552 is a deficient number, since it is larger than the sum of its proper divisors (150190648).

166616552 is a wasteful number, since it uses less digits than its factorization.

166616552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293416 (or 293412 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 166616552 is about 12908.0034087383. The cubic root of 166616552 is about 550.2660442919.

The spelling of 166616552 in words is "one hundred sixty-six million, six hundred sixteen thousand, five hundred fifty-two".