61755128 has 16 divisors (see below), whose sum is σ = 116204280. Its totient is φ = 30767328.

The previous prime is 61755121. The next prime is 61755139. The reversal of 61755128 is 82155716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61755121) 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, 11375 + ... + 15902.

Almost surely, 2^61755128 is an apocalyptic number.

It is an amenable number.

61755128 is a deficient number, since it is larger than the sum of its proper divisors (54449152).

61755128 is a wasteful number, since it uses less digits than its factorization.

61755128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27566 (or 27562 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 61755128 is about 7858.4431028035. The cubic root of 61755128 is about 395.2674106572.

The spelling of 61755128 in words is "sixty-one million, seven hundred fifty-five thousand, one hundred twenty-eight".