561502490 has 16 divisors (see below), whose sum is σ = 1013057280. Its totient is φ = 224078160.

The previous prime is 561502489. The next prime is 561502507. The reversal of 561502490 is 94205165.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60830 + ... + 69449.

It is an arithmetic number, because the mean of its divisors is an integer number (63316080).

Almost surely, 2^561502490 is an apocalyptic number.

561502490 is a deficient number, since it is larger than the sum of its proper divisors (451554790).

561502490 is a wasteful number, since it uses less digits than its factorization.

561502490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130717.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 561502490 is about 23696.0437626200. The cubic root of 561502490 is about 824.9935671369.

The spelling of 561502490 in words is "five hundred sixty-one million, five hundred two thousand, four hundred ninety".