475271645 has 4 divisors (see below), whose sum is σ = 570325980. Its totient is φ = 380217312.

The previous prime is 475271639. The next prime is 475271677. The reversal of 475271645 is 546172574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546172574 = 2 ⋅273086287.

It can be written as a sum of positive squares in 2 ways, for example, as 90288004 + 384983641 = 9502^2 + 19621^2 .

It is a cyclic number.

It is not a de Polignac number, because 475271645 - 2⁶ = 475271581 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47527160 + ... + 47527169.

It is an arithmetic number, because the mean of its divisors is an integer number (142581495).

Almost surely, 2^475271645 is an apocalyptic number.

It is an amenable number.

475271645 is a deficient number, since it is larger than the sum of its proper divisors (95054335).

475271645 is an equidigital number, since it uses as much as digits as its factorization.

475271645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95054334.

The product of its digits is 235200, while the sum is 41.

The square root of 475271645 is about 21800.7257906704. The cubic root of 475271645 is about 780.3940836797.

The spelling of 475271645 in words is "four hundred seventy-five million, two hundred seventy-one thousand, six hundred forty-five".