166451457 has 8 divisors (see below), whose sum is σ = 233616160. Its totient is φ = 105127200.

The previous prime is 166451443. The next prime is 166451459. The reversal of 166451457 is 754154661.

166451457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166451457 - 2²² = 162257153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166451459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460044 + ... + 1460157.

It is an arithmetic number, because the mean of its divisors is an integer number (29202020).

Almost surely, 2^166451457 is an apocalyptic number.

It is an amenable number.

166451457 is a deficient number, since it is larger than the sum of its proper divisors (67164703).

166451457 is a wasteful number, since it uses less digits than its factorization.

166451457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920223.

The product of its digits is 100800, while the sum is 39.

The square root of 166451457 is about 12901.6067604000. The cubic root of 166451457 is about 550.0842372354.

The spelling of 166451457 in words is "one hundred sixty-six million, four hundred fifty-one thousand, four hundred fifty-seven".