561455952 has 20 divisors (see below), whose sum is σ = 1450428000. Its totient is φ = 187151968.

The previous prime is 561455933. The next prime is 561455953. The reversal of 561455952 is 259554165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561455953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5848452 + ... + 5848547.

It is an arithmetic number, because the mean of its divisors is an integer number (72521400).

Almost surely, 2^561455952 is an apocalyptic number.

It is an amenable number.

561455952 is an abundant number, since it is smaller than the sum of its proper divisors (888972048).

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

561455952 is a wasteful number, since it uses less digits than its factorization.

561455952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11697010 (or 11697004 counting only the distinct ones).

The product of its digits is 270000, while the sum is 42.

The square root of 561455952 is about 23695.0617640048. The cubic root of 561455952 is about 824.9707743550.

The spelling of 561455952 in words is "five hundred sixty-one million, four hundred fifty-five thousand, nine hundred fifty-two".