61953975 has 36 divisors (see below), whose sum is σ = 111547176. Its totient is φ = 32869440.

The previous prime is 61953959. The next prime is 61953989. The reversal of 61953975 is 57935916.

It is not a de Polignac number, because 61953975 - 2⁴ = 61953959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61953975.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50469 + ... + 51681.

Almost surely, 2^61953975 is an apocalyptic number.

61953975 is a deficient number, since it is larger than the sum of its proper divisors (49593201).

61953975 is a wasteful number, since it uses less digits than its factorization.

61953975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 1448 counting only the distinct ones).

The product of its digits is 255150, while the sum is 45.

The square root of 61953975 is about 7871.0847409998. The cubic root of 61953975 is about 395.6912001857.

The spelling of 61953975 in words is "sixty-one million, nine hundred fifty-three thousand, nine hundred seventy-five".