166520452 has 12 divisors (see below), whose sum is σ = 333040960. Its totient is φ = 71365896.

The previous prime is 166520449. The next prime is 166520507. The reversal of 166520452 is 254025661.

166520452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

166520452 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973552 + ... + 2973607.

Almost surely, 2^166520452 is an apocalyptic number.

It is an amenable number.

166520452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166520452 is a wasteful number, since it uses less digits than its factorization.

166520452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5947170 (or 5947168 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 166520452 is about 12904.2803751313. The cubic root of 166520452 is about 550.1602310015.

The spelling of 166520452 in words is "one hundred sixty-six million, five hundred twenty thousand, four hundred fifty-two".