561610115 has 16 divisors (see below), whose sum is σ = 742785120. Its totient is φ = 404229120.

The previous prime is 561610111. The next prime is 561610117. The reversal of 561610115 is 511016165.

It is not a de Polignac number, because 561610115 - 2² = 561610111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561610111) 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, 47300 + ... + 57969.

It is an arithmetic number, because the mean of its divisors is an integer number (46424070).

Almost surely, 2^561610115 is an apocalyptic number.

561610115 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

561610115 is a deficient number, since it is larger than the sum of its proper divisors (181175005).

561610115 is a wasteful number, since it uses less digits than its factorization.

561610115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105382.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 561610115 is about 23698.3146025197. The cubic root of 561610115 is about 825.0462734988.

The spelling of 561610115 in words is "five hundred sixty-one million, six hundred ten thousand, one hundred fifteen".