475521578 has 12 divisors (see below), whose sum is σ = 829736802. Its totient is φ = 203794920.

The previous prime is 475521539. The next prime is 475521593. The reversal of 475521578 is 875125574.

It can be written as a sum of positive squares in only one way, i.e., 444239929 + 31281649 = 21077^2 + 5593^2 .

It is a super-2 number, since 2×475521578² = 452241542287220168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2426033 + ... + 2426228.

Almost surely, 2^475521578 is an apocalyptic number.

475521578 is a deficient number, since it is larger than the sum of its proper divisors (354215224).

475521578 is a wasteful number, since it uses less digits than its factorization.

475521578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852277 (or 4852270 counting only the distinct ones).

The product of its digits is 392000, while the sum is 44.

The square root of 475521578 is about 21806.4572546757. The cubic root of 475521578 is about 780.5308560264.

The spelling of 475521578 in words is "four hundred seventy-five million, five hundred twenty-one thousand, five hundred seventy-eight".