561507532553 has 32 divisors (see below), whose sum is σ = 622221844608. Its totient is φ = 502467840000.

The previous prime is 561507532507. The next prime is 561507532571. The reversal of 561507532553 is 355235705165.

It is a cyclic number.

It is not a de Polignac number, because 561507532553 - 2²⁶ = 561440423689 is a prime.

It is a super-2 number, since 2×561507532553² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561507532498 and 561507532507.

It is not an unprimeable number, because it can be changed into a prime (561507522553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299150651 + ... + 299152527.

It is an arithmetic number, because the mean of its divisors is an integer number (19444432644).

Almost surely, 2^561507532553 is an apocalyptic number.

It is an amenable number.

561507532553 is a deficient number, since it is larger than the sum of its proper divisors (60714312055).

561507532553 is a wasteful number, since it uses less digits than its factorization.

561507532553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353.

The product of its (nonzero) digits is 2362500, while the sum is 47.

The spelling of 561507532553 in words is "five hundred sixty-one billion, five hundred seven million, five hundred thirty-two thousand, five hundred fifty-three".