561143252 has 12 divisors (see below), whose sum is σ = 983561376. Its totient is φ = 280125720.

The previous prime is 561143251. The next prime is 561143257. The reversal of 561143252 is 252341165.

561143252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561143251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108638 + ... + 113685.

It is an arithmetic number, because the mean of its divisors is an integer number (81963448).

Almost surely, 2^561143252 is an apocalyptic number.

It is an amenable number.

561143252 is a deficient number, since it is larger than the sum of its proper divisors (422418124).

561143252 is a wasteful number, since it uses less digits than its factorization.

561143252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222958 (or 222956 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 561143252 is about 23688.4624237201. The cubic root of 561143252 is about 824.8175915057.

The spelling of 561143252 in words is "five hundred sixty-one million, one hundred forty-three thousand, two hundred fifty-two".