561264453 has 12 divisors (see below), whose sum is σ = 813168928. Its totient is φ = 373043880.

The previous prime is 561264449. The next prime is 561264467. The reversal of 561264453 is 354462165.

561264453 is a `hidden beast` number, since 5 + 6 + 1 + 2 + 644 + 5 + 3 = 666.

It is not a de Polignac number, because 561264453 - 2² = 561264449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561264413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91225 + ... + 97182.

Almost surely, 2^561264453 is an apocalyptic number.

It is an amenable number.

561264453 is a deficient number, since it is larger than the sum of its proper divisors (251904475).

561264453 is a wasteful number, since it uses less digits than its factorization.

561264453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188744 (or 188741 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 561264453 is about 23691.0205141104. The cubic root of 561264453 is about 824.8769711858.

The spelling of 561264453 in words is "five hundred sixty-one million, two hundred sixty-four thousand, four hundred fifty-three".