475997121 has 16 divisors (see below), whose sum is σ = 735841920. Its totient is φ = 303534000.

The previous prime is 475997111. The next prime is 475997141. The reversal of 475997121 is 121799574.

475997121 is a `hidden beast` number, since 47 + 599 + 7 + 12 + 1 = 666.

It is not a de Polignac number, because 475997121 - 2⁵ = 475997089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (475997111) 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, 382630 + ... + 383871.

It is an arithmetic number, because the mean of its divisors is an integer number (45990120).

Almost surely, 2^475997121 is an apocalyptic number.

It is an amenable number.

475997121 is a deficient number, since it is larger than the sum of its proper divisors (259844799).

475997121 is a wasteful number, since it uses less digits than its factorization.

475997121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766533 (or 766527 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 475997121 is about 21817.3582497973. The cubic root of 475997121 is about 780.7909580139.

The spelling of 475997121 in words is "four hundred seventy-five million, nine hundred ninety-seven thousand, one hundred twenty-one".