561077788 has 12 divisors (see below), whose sum is σ = 982218160. Its totient is φ = 280444032.

The previous prime is 561077767. The next prime is 561077789. The reversal of 561077788 is 887770165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561077789) 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, 9456 + ... + 34807.

Almost surely, 2^561077788 is an apocalyptic number.

It is an amenable number.

561077788 is a deficient number, since it is larger than the sum of its proper divisors (421140372).

561077788 is a wasteful number, since it uses less digits than its factorization.

561077788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47436 (or 47434 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 49.

The square root of 561077788 is about 23687.0806137016. The cubic root of 561077788 is about 824.7855153478.

The spelling of 561077788 in words is "five hundred sixty-one million, seventy-seven thousand, seven hundred eighty-eight".