61135 has 4 divisors (see below), whose sum is σ = 73368.
Its totient is φ = 48904.
The previous prime is 61129. The next prime is 61141. The reversal of 61135 is 53116.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (61129) and next prime (61141).
It is a cyclic number.
It is not a de Polignac number, because 61135 - 27 = 61007 is a prime.
It is an iccanobiF number.
It is a Duffinian number.
It is a congruent 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, 6109 + ... + 6118.
It is an arithmetic number, because the mean of its divisors is an integer number (18342).
261135 is an apocalyptic number.
61135 is a deficient number, since it is larger than the sum of its proper divisors (12233).
61135 is a wasteful number, since it uses less digits than its factorization.
61135 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12232.
The product of its digits is 90, while the sum is 16.
The square root of 61135 is about 247.2549291723.
The cubic root of 61135 is about 39.3939901679.
The spelling of 61135 in words is "sixty-one thousand, one hundred thirty-five".