61975135 has 4 divisors (see below), whose sum is σ = 74370168. Its totient is φ = 49580104.

The previous prime is 61975129. The next prime is 61975139. The reversal of 61975135 is 53157916.

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 61975135 - 2⁷ = 61975007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61975094 and 61975103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61975139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6197509 + ... + 6197518.

It is an arithmetic number, because the mean of its divisors is an integer number (18592542).

Almost surely, 2^61975135 is an apocalyptic number.

61975135 is a deficient number, since it is larger than the sum of its proper divisors (12395033).

61975135 is a wasteful number, since it uses less digits than its factorization.

61975135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12395032.

The product of its digits is 28350, while the sum is 37.

The square root of 61975135 is about 7872.4287865944. The cubic root of 61975135 is about 395.7362436917.

The spelling of 61975135 in words is "sixty-one million, nine hundred seventy-five thousand, one hundred thirty-five".