561389475 has 12 divisors (see below), whose sum is σ = 928164056. Its totient is φ = 299407680.

The previous prime is 561389473. The next prime is 561389513. The reversal of 561389475 is 574983165.

It is not a de Polignac number, because 561389475 - 2¹ = 561389473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561389473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3742522 + ... + 3742671.

Almost surely, 2^561389475 is an apocalyptic number.

561389475 is a deficient number, since it is larger than the sum of its proper divisors (366774581).

561389475 is a wasteful number, since it uses less digits than its factorization.

561389475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7485206 (or 7485201 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 561389475 is about 23693.6589618404. The cubic root of 561389475 is about 824.9382139219.

The spelling of 561389475 in words is "five hundred sixty-one million, three hundred eighty-nine thousand, four hundred seventy-five".