561025506 has 32 divisors (see below), whose sum is σ = 1133984448. Its totient is φ = 185030720.

The previous prime is 561025501. The next prime is 561025519. The reversal of 561025506 is 605520165.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (561025501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234436 + ... + 236816.

It is an arithmetic number, because the mean of its divisors is an integer number (35437014).

Almost surely, 2^561025506 is an apocalyptic number.

561025506 is an abundant number, since it is smaller than the sum of its proper divisors (572958942).

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

561025506 is a wasteful number, since it uses less digits than its factorization.

561025506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 561025506 is about 23685.9769906162. The cubic root of 561025506 is about 824.7598963358.

The spelling of 561025506 in words is "five hundred sixty-one million, twenty-five thousand, five hundred six".