475172809251 has 8 divisors (see below), whose sum is σ = 724072852224. Its totient is φ = 271527319560.

The previous prime is 475172809231. The next prime is 475172809277. The reversal of 475172809251 is 152908271574.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 475172809251 - 2⁵ = 475172809219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 475172809194 and 475172809203.

It is not an unprimeable number, because it can be changed into a prime (475172809231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11313638295 + ... + 11313638336.

It is an arithmetic number, because the mean of its divisors is an integer number (90509106528).

Almost surely, 2^475172809251 is an apocalyptic number.

475172809251 is a deficient number, since it is larger than the sum of its proper divisors (248900042973).

475172809251 is a wasteful number, since it uses less digits than its factorization.

475172809251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22627276641.

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 475172809251 in words is "four hundred seventy-five billion, one hundred seventy-two million, eight hundred nine thousand, two hundred fifty-one".