166855552 has 32 divisors (see below), whose sum is σ = 333662400. Its totient is φ = 83112960.

The previous prime is 166855537. The next prime is 166855553. The reversal of 166855552 is 255558661.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 166855499 and 166855508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166855553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33649 + ... + 38287.

It is an arithmetic number, because the mean of its divisors is an integer number (10426950).

Almost surely, 2^166855552 is an apocalyptic number.

It is an amenable number.

166855552 is a deficient number, since it is larger than the sum of its proper divisors (166806848).

166855552 is an equidigital number, since it uses as much as digits as its factorization.

166855552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4934 (or 4922 counting only the distinct ones).

The product of its digits is 360000, while the sum is 43.

The square root of 166855552 is about 12917.2579133499. The cubic root of 166855552 is about 550.5290248715.

The spelling of 166855552 in words is "one hundred sixty-six million, eight hundred fifty-five thousand, five hundred fifty-two".