561284118 has 24 divisors (see below), whose sum is σ = 1216585656. Its totient is φ = 187022400.

The previous prime is 561284099. The next prime is 561284147. The reversal of 561284118 is 811482165.

561284118 is a `hidden beast` number, since 561 + 2 + 84 + 1 + 18 = 666.

It is a super-2 number, since 2×561284118² = 630079722238075848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63553 + ... + 71843.

It is an arithmetic number, because the mean of its divisors is an integer number (50691069).

Almost surely, 2^561284118 is an apocalyptic number.

561284118 is an abundant number, since it is smaller than the sum of its proper divisors (655301538).

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

561284118 is a wasteful number, since it uses less digits than its factorization.

561284118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12060 (or 12057 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 561284118 is about 23691.4355411402. The cubic root of 561284118 is about 824.8866048004.

The spelling of 561284118 in words is "five hundred sixty-one million, two hundred eighty-four thousand, one hundred eighteen".