61000115 has 16 divisors (see below), whose sum is σ = 80075520. Its totient is φ = 44241120.

The previous prime is 61000111. The next prime is 61000133. The reversal of 61000115 is 51100016.

It is not a de Polignac number, because 61000115 - 2² = 61000111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61000115.

It is not an unprimeable number, because it can be changed into a prime (61000111) 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, 21722 + ... + 24368.

It is an arithmetic number, because the mean of its divisors is an integer number (5004720).

Almost surely, 2^61000115 is an apocalyptic number.

61000115 is a deficient number, since it is larger than the sum of its proper divisors (19075405).

61000115 is a wasteful number, since it uses less digits than its factorization.

61000115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 61000115 is about 7810.2570380238. The cubic root of 61000115 is about 393.6499656856.

Subtracting from 61000115 its reverse (51100016), we obtain a palindrome (9900099).

It can be divided in two parts, 6100011 and 5, that added together give a palindrome (6100016).

The spelling of 61000115 in words is "sixty-one million, one hundred fifteen", and thus it is an aban number.