561526 has 16 divisors (see below), whose sum is σ = 1013760. Its totient is φ = 227880.

The previous prime is 561521. The next prime is 561529. The reversal of 561526 is 625165.

It is a super-2 number, since 2×561526² = 630622897352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790 + ... + 1321.

It is an arithmetic number, because the mean of its divisors is an integer number (63360).

2⁵⁶¹⁵²⁶ is an apocalyptic number.

561526 is a deficient number, since it is larger than the sum of its proper divisors (452234).

561526 is a wasteful number, since it uses less digits than its factorization.

561526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139.

The product of its digits is 1800, while the sum is 25.

The square root of 561526 is about 749.3503853339. The cubic root of 561526 is about 82.5005081083.

The spelling of 561526 in words is "five hundred sixty-one thousand, five hundred twenty-six".