475123251 has 4 divisors (see below), whose sum is σ = 633497672. Its totient is φ = 316748832.

The previous prime is 475123247. The next prime is 475123279. The reversal of 475123251 is 152321574.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 475123251 - 2² = 475123247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475123951) 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, 79187206 + ... + 79187211.

It is an arithmetic number, because the mean of its divisors is an integer number (158374418).

Almost surely, 2^475123251 is an apocalyptic number.

475123251 is a deficient number, since it is larger than the sum of its proper divisors (158374421).

475123251 is a wasteful number, since it uses less digits than its factorization.

475123251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158374420.

The product of its digits is 8400, while the sum is 30.

The square root of 475123251 is about 21797.3221061671. The cubic root of 475123251 is about 780.3128544461.

The spelling of 475123251 in words is "four hundred seventy-five million, one hundred twenty-three thousand, two hundred fifty-one".