561552 has 20 divisors (see below), whose sum is σ = 1450800. Its totient is φ = 187168.

The previous prime is 561551. The next prime is 561553. The reversal of 561552 is 255165.

It is an interprime number because it is at equal distance from previous prime (561551) and next prime (561553).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (561551) 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, 5802 + ... + 5897.

It is an arithmetic number, because the mean of its divisors is an integer number (72540).

2⁵⁶¹⁵⁵² is an apocalyptic number.

It is an amenable number.

561552 is an abundant number, since it is smaller than the sum of its proper divisors (889248).

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

561552 is a wasteful number, since it uses less digits than its factorization.

561552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11710 (or 11704 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 561552 is about 749.3677334927. The cubic root of 561552 is about 82.5017814124.

The spelling of 561552 in words is "five hundred sixty-one thousand, five hundred fifty-two".