561494592 has 140 divisors (see below), whose sum is σ = 1684530540. Its totient is φ = 184909824.

The previous prime is 561494587. The next prime is 561494597. The reversal of 561494592 is 295494165.

561494592 is a `hidden beast` number, since 56 + 1 + 4 + 9 + 4 + 592 = 666.

It is an interprime number because it is at equal distance from previous prime (561494587) and next prime (561494597).

It can be written as a sum of positive squares in 2 ways, for example, as 146313216 + 415181376 = 12096^2 + 20376^2 .

It is not an unprimeable number, because it can be changed into a prime (561494597) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 460768 + ... + 461984.

It is an arithmetic number, because the mean of its divisors is an integer number (12032361).

Almost surely, 2^561494592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561494592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842265270).

561494592 is an abundant number, since it is smaller than the sum of its proper divisors (1123035948).

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

561494592 is a wasteful number, since it uses less digits than its factorization.

561494592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1311 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 561494592 is about 23695.8771097421. The cubic root of 561494592 is about 824.9896990449.

The spelling of 561494592 in words is "five hundred sixty-one million, four hundred ninety-four thousand, five hundred ninety-two".