166531552 has 24 divisors (see below), whose sum is σ = 357665112. Its totient is φ = 75696000.

The previous prime is 166531537. The next prime is 166531567. The reversal of 166531552 is 255135661.

It is an interprime number because it is at equal distance from previous prime (166531537) and next prime (166531567).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 236199 + ... + 236902.

It is an arithmetic number, because the mean of its divisors is an integer number (14902713).

Almost surely, 2^166531552 is an apocalyptic number.

It is an amenable number.

166531552 is an abundant number, since it is smaller than the sum of its proper divisors (191133560).

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

166531552 is a wasteful number, since it uses less digits than its factorization.

166531552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473122 (or 473114 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 166531552 is about 12904.7104578135. The cubic root of 166531552 is about 550.1724550112.

The spelling of 166531552 in words is "one hundred sixty-six million, five hundred thirty-one thousand, five hundred fifty-two".