561149232 has 80 divisors (see below), whose sum is σ = 1666060032. Its totient is φ = 159425280.

The previous prime is 561149231. The next prime is 561149257. The reversal of 561149232 is 232941165.

It is a junction number, because it is equal to n+sod(n) for n = 561149193 and 561149202.

It is not an unprimeable number, because it can be changed into a prime (561149231) 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 15 ways as a sum of consecutive naturals, for example, 56203 + ... + 65429.

Almost surely, 2^561149232 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 561149232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833030016).

561149232 is an abundant number, since it is smaller than the sum of its proper divisors (1104910800).

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

561149232 is a wasteful number, since it uses less digits than its factorization.

561149232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9426 (or 9420 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 561149232 is about 23688.5886451684. The cubic root of 561149232 is about 824.8205214716.

The spelling of 561149232 in words is "five hundred sixty-one million, one hundred forty-nine thousand, two hundred thirty-two".