561458493 has 16 divisors (see below), whose sum is σ = 875569600. Its totient is φ = 354605040.

The previous prime is 561458489. The next prime is 561458567. The reversal of 561458493 is 394854165.

561458493 is a `hidden beast` number, since 5 + 61 + 4 + 584 + 9 + 3 = 666.

It is not a de Polignac number, because 561458493 - 2² = 561458489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561458483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546718 + ... + 547743.

It is an arithmetic number, because the mean of its divisors is an integer number (54723100).

Almost surely, 2^561458493 is an apocalyptic number.

It is an amenable number.

561458493 is a deficient number, since it is larger than the sum of its proper divisors (314111107).

561458493 is a wasteful number, since it uses less digits than its factorization.

561458493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094489 (or 1094483 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 561458493 is about 23695.1153827113. The cubic root of 561458493 is about 824.9720188857.

The spelling of 561458493 in words is "five hundred sixty-one million, four hundred fifty-eight thousand, four hundred ninety-three".