561525330 has 32 divisors (see below), whose sum is σ = 1348689600. Its totient is φ = 149625792.

The previous prime is 561525329. The next prime is 561525359. The reversal of 561525330 is 33525165.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37356 + ... + 50184.

It is an arithmetic number, because the mean of its divisors is an integer number (42146550).

Almost surely, 2^561525330 is an apocalyptic number.

561525330 is an abundant number, since it is smaller than the sum of its proper divisors (787164270).

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

561525330 is a wasteful number, since it uses less digits than its factorization.

561525330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14298.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 561525330 is about 23696.5256947089. The cubic root of 561525330 is about 825.0047529570.

The spelling of 561525330 in words is "five hundred sixty-one million, five hundred twenty-five thousand, three hundred thirty".