561364992 has 210 divisors, whose sum is σ = 1719087888. Its totient is φ = 183140352.

The previous prime is 561364967. The next prime is 561364997. The reversal of 561364992 is 299463165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561364997) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 11943913 + ... + 11943959.

Almost surely, 2^561364992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561364992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859543944).

561364992 is an abundant number, since it is smaller than the sum of its proper divisors (1157722896).

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

561364992 is an frugal number, since it uses more digits than its factorization.

561364992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 52 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 561364992 is about 23693.1422989860. The cubic root of 561364992 is about 824.9262215015.

The spelling of 561364992 in words is "five hundred sixty-one million, three hundred sixty-four thousand, nine hundred ninety-two".