476225721 has 6 divisors (see below), whose sum is σ = 687881610. Its totient is φ = 317483808.

The previous prime is 476225713. The next prime is 476225759. The reversal of 476225721 is 127522674.

It is a happy number.

476225721 is a `hidden beast` number, since 4 + 7 + 622 + 5 + 7 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 429111225 + 47114496 = 20715^2 + 6864^2 .

It is not a de Polignac number, because 476225721 - 2³ = 476225713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (476225021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26456976 + ... + 26456993.

It is an arithmetic number, because the mean of its divisors is an integer number (114646935).

Almost surely, 2^476225721 is an apocalyptic number.

It is an amenable number.

476225721 is a deficient number, since it is larger than the sum of its proper divisors (211655889).

476225721 is a wasteful number, since it uses less digits than its factorization.

476225721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52913975 (or 52913972 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 476225721 is about 21822.5965686946. The cubic root of 476225721 is about 780.9159309318.

The spelling of 476225721 in words is "four hundred seventy-six million, two hundred twenty-five thousand, seven hundred twenty-one".