166011552 has 96 divisors (see below), whose sum is σ = 553392000. Its totient is φ = 47430144.

The previous prime is 166011533. The next prime is 166011553. The reversal of 166011552 is 255110661.

It is a happy number.

166011552 is a `hidden beast` number, since 1 + 6 + 601 + 1 + 5 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (166011553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7677 + ... + 19772.

It is an arithmetic number, because the mean of its divisors is an integer number (5764500).

Almost surely, 2^166011552 is an apocalyptic number.

166011552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166011552 is an abundant number, since it is smaller than the sum of its proper divisors (387380448).

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

166011552 is a wasteful number, since it uses less digits than its factorization.

166011552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27475 (or 27461 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 166011552 is about 12884.5470234696. The cubic root of 166011552 is about 549.5992143541.

The spelling of 166011552 in words is "one hundred sixty-six million, eleven thousand, five hundred fifty-two".