561163304 has 16 divisors (see below), whose sum is σ = 1133118420. Its totient is φ = 258998400.

The previous prime is 561163289. The next prime is 561163313. The reversal of 561163304 is 403361165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 524318404 + 36844900 = 22898^2 + 6070^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2697797 + ... + 2698004.

Almost surely, 2^561163304 is an apocalyptic number.

It is an amenable number.

561163304 is an abundant number, since it is smaller than the sum of its proper divisors (571955116).

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

561163304 is a wasteful number, since it uses less digits than its factorization.

561163304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5395820 (or 5395816 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 561163304 is about 23688.8856639564. The cubic root of 561163304 is about 824.8274161184.

The spelling of 561163304 in words is "five hundred sixty-one million, one hundred sixty-three thousand, three hundred four".