561654522 has 96 divisors (see below), whose sum is σ = 1443064896. Its totient is φ = 155635200.

The previous prime is 561654521. The next prime is 561654539. The reversal of 561654522 is 225456165.

It is not an unprimeable number, because it can be changed into a prime (561654521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 289897 + ... + 291827.

It is an arithmetic number, because the mean of its divisors is an integer number (15031926).

Almost surely, 2^561654522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561654522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (721532448).

561654522 is an abundant number, since it is smaller than the sum of its proper divisors (881410374).

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

561654522 is a wasteful number, since it uses less digits than its factorization.

561654522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076 (or 2073 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 561654522 is about 23699.2515071679. The cubic root of 561654522 is about 825.0680186343.

The spelling of 561654522 in words is "five hundred sixty-one million, six hundred fifty-four thousand, five hundred twenty-two".