61315 has 4 divisors (see below), whose sum is σ = 73584. Its totient is φ = 49048.

The previous prime is 61297. The next prime is 61331. The reversal of 61315 is 51316.

61315 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61315 - 2⁵ = 61283 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6127 + ... + 6136.

It is an arithmetic number, because the mean of its divisors is an integer number (18396).

2⁶¹³¹⁵ is an apocalyptic number.

61315 is a deficient number, since it is larger than the sum of its proper divisors (12269).

61315 is a wasteful number, since it uses less digits than its factorization.

61315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12268.

The product of its digits is 90, while the sum is 16.

The square root of 61315 is about 247.6186584246. The cubic root of 61315 is about 39.4326149072.

Subtracting from 61315 its reverse (51316), we obtain a palindrome (9999).

The spelling of 61315 in words is "sixty-one thousand, three hundred fifteen".