561242615 has 16 divisors (see below), whose sum is σ = 718658400. Its totient is φ = 419530752.

The previous prime is 561242611. The next prime is 561242657. The reversal of 561242615 is 516242165.

It is a cyclic number.

It is not a de Polignac number, because 561242615 - 2² = 561242611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561242611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33530 + ... + 47399.

It is an arithmetic number, because the mean of its divisors is an integer number (44916150).

Almost surely, 2^561242615 is an apocalyptic number.

561242615 is a deficient number, since it is larger than the sum of its proper divisors (157415785).

561242615 is a wasteful number, since it uses less digits than its factorization.

561242615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81026.

The product of its digits is 14400, while the sum is 32.

The square root of 561242615 is about 23690.5596177043. The cubic root of 561242615 is about 824.8662727846.

The spelling of 561242615 in words is "five hundred sixty-one million, two hundred forty-two thousand, six hundred fifteen".