166038552 has 64 divisors (see below), whose sum is σ = 462789600. Its totient is φ = 55157760.

The previous prime is 166038547. The next prime is 166038563. The reversal of 166038552 is 255830661.

166038552 is a `hidden beast` number, since 16 + 60 + 38 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71652 + ... + 73932.

Almost surely, 2^166038552 is an apocalyptic number.

166038552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166038552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231394800).

166038552 is an abundant number, since it is smaller than the sum of its proper divisors (296751048).

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

166038552 is a wasteful number, since it uses less digits than its factorization.

166038552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 166038552 is about 12885.5947476242. The cubic root of 166038552 is about 549.6290082132.

The spelling of 166038552 in words is "one hundred sixty-six million, thirty-eight thousand, five hundred fifty-two".