561210252 has 24 divisors (see below), whose sum is σ = 1313683056. Its totient is φ = 186471168.

The previous prime is 561210241. The next prime is 561210253. The reversal of 561210252 is 252012165.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (561210253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70953 + ... + 78464.

It is an arithmetic number, because the mean of its divisors is an integer number (54736794).

Almost surely, 2^561210252 is an apocalyptic number.

It is an amenable number.

561210252 is an abundant number, since it is smaller than the sum of its proper divisors (752472804).

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

561210252 is a wasteful number, since it uses less digits than its factorization.

561210252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149737 (or 149735 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 561210252 is about 23689.8765720719. The cubic root of 561210252 is about 824.8504176923.

The spelling of 561210252 in words is "five hundred sixty-one million, two hundred ten thousand, two hundred fifty-two".