561256802 has 8 divisors (see below), whose sum is σ = 891407916. Its totient is φ = 264120832.

The previous prime is 561256799. The next prime is 561256823. The reversal of 561256802 is 208652165.

It can be written as a sum of positive squares in 2 ways, for example, as 510262921 + 50993881 = 22589^2 + 7141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×561256802³ (a number of 27 digits) contains 333 as substring.

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, 8253743 + ... + 8253810.

Almost surely, 2^561256802 is an apocalyptic number.

561256802 is a deficient number, since it is larger than the sum of its proper divisors (330151114).

561256802 is a wasteful number, since it uses less digits than its factorization.

561256802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16507572.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 561256802 is about 23690.8590388783. The cubic root of 561256802 is about 824.8732230048.

The spelling of 561256802 in words is "five hundred sixty-one million, two hundred fifty-six thousand, eight hundred two".