451664157 has 16 divisors (see below), whose sum is σ = 697946112. Its totient is φ = 254457840.

The previous prime is 451664149. The next prime is 451664173. The reversal of 451664157 is 751466154.

It is not a de Polignac number, because 451664157 - 2³ = 451664149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451664137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149973 + ... + 152954.

It is an arithmetic number, because the mean of its divisors is an integer number (43621632).

Almost surely, 2^451664157 is an apocalyptic number.

It is an amenable number.

451664157 is a deficient number, since it is larger than the sum of its proper divisors (246281955).

451664157 is a wasteful number, since it uses less digits than its factorization.

451664157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303008.

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

The square root of 451664157 is about 21252.3917948075. The cubic root of 451664157 is about 767.2529067673.

The spelling of 451664157 in words is "four hundred fifty-one million, six hundred sixty-four thousand, one hundred fifty-seven".