475378521 has 16 divisors (see below), whose sum is σ = 654896640. Its totient is φ = 306408960.

The previous prime is 475378511. The next prime is 475378523. The reversal of 475378521 is 125873574.

It is not a de Polignac number, because 475378521 - 2⁵ = 475378489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (475378523) 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, 148425 + ... + 151593.

It is an arithmetic number, because the mean of its divisors is an integer number (40931040).

Almost surely, 2^475378521 is an apocalyptic number.

It is an amenable number.

475378521 is a deficient number, since it is larger than the sum of its proper divisors (179518119).

475378521 is a wasteful number, since it uses less digits than its factorization.

475378521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816.

The product of its digits is 235200, while the sum is 42.

The square root of 475378521 is about 21803.1768556786. The cubic root of 475378521 is about 780.4525759461.

The spelling of 475378521 in words is "four hundred seventy-five million, three hundred seventy-eight thousand, five hundred twenty-one".