475118021 has 4 divisors (see below), whose sum is σ = 542992032. Its totient is φ = 407244012.

The previous prime is 475118003. The next prime is 475118041. The reversal of 475118021 is 120811574.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 475118021 - 2⁶ = 475117957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475118041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33936995 + ... + 33937008.

It is an arithmetic number, because the mean of its divisors is an integer number (135748008).

Almost surely, 2^475118021 is an apocalyptic number.

It is an amenable number.

475118021 is a deficient number, since it is larger than the sum of its proper divisors (67874011).

475118021 is an equidigital number, since it uses as much as digits as its factorization.

475118021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67874010.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 475118021 is about 21797.2021369716. The cubic root of 475118021 is about 780.3099912935.

Adding to 475118021 its reverse (120811574), we get a palindrome (595929595).

The spelling of 475118021 in words is "four hundred seventy-five million, one hundred eighteen thousand, twenty-one".