561555627 has 8 divisors (see below), whose sum is σ = 749291664. Its totient is φ = 374095008.

The previous prime is 561555613. The next prime is 561555637. The reversal of 561555627 is 726555165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 561555627 - 2¹⁰ = 561554603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561555637) 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, 64048 + ... + 72285.

It is an arithmetic number, because the mean of its divisors is an integer number (93661458).

Almost surely, 2^561555627 is an apocalyptic number.

561555627 is a deficient number, since it is larger than the sum of its proper divisors (187736037).

561555627 is a wasteful number, since it uses less digits than its factorization.

561555627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137709.

The product of its digits is 315000, while the sum is 42.

The square root of 561555627 is about 23697.1649570154. The cubic root of 561555627 is about 825.0195903521.

The spelling of 561555627 in words is "five hundred sixty-one million, five hundred fifty-five thousand, six hundred twenty-seven".