475783561 has 4 divisors (see below), whose sum is σ = 519036624. Its totient is φ = 432530500.

The previous prime is 475783537. The next prime is 475783577. The reversal of 475783561 is 165387574.

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 a cyclic number.

It is not a de Polignac number, because 475783561 - 2²⁵ = 442229129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475783531) 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, 21626515 + ... + 21626536.

It is an arithmetic number, because the mean of its divisors is an integer number (129759156).

Almost surely, 2^475783561 is an apocalyptic number.

It is an amenable number.

475783561 is a deficient number, since it is larger than the sum of its proper divisors (43253063).

475783561 is a wasteful number, since it uses less digits than its factorization.

475783561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43253062.

The product of its digits is 705600, while the sum is 46.

The square root of 475783561 is about 21812.4634326341. The cubic root of 475783561 is about 780.6741711308.

The spelling of 475783561 in words is "four hundred seventy-five million, seven hundred eighty-three thousand, five hundred sixty-one".