561076420 has 12 divisors (see below), whose sum is σ = 1178260524. Its totient is φ = 224430560.

The previous prime is 561076387. The next prime is 561076423. The reversal of 561076420 is 24670165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 166100544 + 394975876 = 12888^2 + 19874^2 .

It is not an unprimeable number, because it can be changed into a prime (561076423) 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, 14026891 + ... + 14026930.

It is an arithmetic number, because the mean of its divisors is an integer number (98188377).

Almost surely, 2^561076420 is an apocalyptic number.

It is an amenable number.

561076420 is an abundant number, since it is smaller than the sum of its proper divisors (617184104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561076420 is a wasteful number, since it uses less digits than its factorization.

561076420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28053830 (or 28053828 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 561076420 is about 23687.0517371833. The cubic root of 561076420 is about 824.7848450263.

The spelling of 561076420 in words is "five hundred sixty-one million, seventy-six thousand, four hundred twenty".