61113975 has 48 divisors (see below), whose sum is σ = 114576000. Its totient is φ = 28494720.

The previous prime is 61113971. The next prime is 61114003. The reversal of 61113975 is 57931116.

It is a happy number.

It is not a de Polignac number, because 61113975 - 2² = 61113971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61113971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16876 + ... + 20174.

It is an arithmetic number, because the mean of its divisors is an integer number (2387000).

Almost surely, 2^61113975 is an apocalyptic number.

61113975 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61113975 is a deficient number, since it is larger than the sum of its proper divisors (53462025).

61113975 is a wasteful number, since it uses less digits than its factorization.

61113975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344 (or 3339 counting only the distinct ones).

The product of its digits is 5670, while the sum is 33.

The square root of 61113975 is about 7817.5427725085. The cubic root of 61113975 is about 393.8947364102.

The spelling of 61113975 in words is "sixty-one million, one hundred thirteen thousand, nine hundred seventy-five".