166252456 has 8 divisors (see below), whose sum is σ = 311723370. Its totient is φ = 83126224.

The previous prime is 166252453. The next prime is 166252459. The reversal of 166252456 is 654252661.

It is an interprime number because it is at equal distance from previous prime (166252453) and next prime (166252459).

It can be written as a sum of positive squares in only one way, i.e., 111640356 + 54612100 = 10566^2 + 7390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (166252453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10390771 + ... + 10390786.

Almost surely, 2^166252456 is an apocalyptic number.

It is an amenable number.

166252456 is a deficient number, since it is larger than the sum of its proper divisors (145470914).

166252456 is a wasteful number, since it uses less digits than its factorization.

166252456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20781563 (or 20781559 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 166252456 is about 12893.8921974709. The cubic root of 166252456 is about 549.8649321223.

The spelling of 166252456 in words is "one hundred sixty-six million, two hundred fifty-two thousand, four hundred fifty-six".