61115 has 8 divisors (see below), whose sum is σ = 77760. Its totient is φ = 45952.

The previous prime is 61099. The next prime is 61121. The reversal of 61115 is 51116.

61115 is nontrivially palindromic in base 4.

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

It is a cyclic number.

It is not a de Polignac number, because 61115 - 2⁴ = 61099 is a prime.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 61115.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 61115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275 + ... + 444.

It is an arithmetic number, because the mean of its divisors is an integer number (9720).

2⁶¹¹¹⁵ is an apocalyptic number.

61115 is a deficient number, since it is larger than the sum of its proper divisors (16645).

61115 is a wasteful number, since it uses less digits than its factorization.

61115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

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

The square root of 61115 is about 247.2144817765. The cubic root of 61115 is about 39.3896938524.

Subtracting from 61115 its reverse (51116), we obtain a palindrome (9999).

It can be divided in two parts, 6111 and 5, that added together give a palindrome (6116).

The spelling of 61115 in words is "sixty-one thousand, one hundred fifteen".