61275375 has 96 divisors (see below), whose sum is σ = 130830336. Its totient is φ = 27000000.

The previous prime is 61275371. The next prime is 61275391. The reversal of 61275375 is 57357216.

61275375 is a `hidden beast` number, since 612 + 7 + 5 + 37 + 5 = 666.

It is not a de Polignac number, because 61275375 - 2² = 61275371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61275371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 244000 + ... + 244250.

It is an arithmetic number, because the mean of its divisors is an integer number (1362816).

Almost surely, 2^61275375 is an apocalyptic number.

61275375 is an abundant number, since it is smaller than the sum of its proper divisors (69554961).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61275375 is a wasteful number, since it uses less digits than its factorization.

61275375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 297 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 61275375 is about 7827.8589026630. The cubic root of 61275375 is about 394.2411859540.

The spelling of 61275375 in words is "sixty-one million, two hundred seventy-five thousand, three hundred seventy-five".