75285657 has 24 divisors (see below), whose sum is σ = 115939200. Its totient is φ = 46938528.

The previous prime is 75285643. The next prime is 75285667. The reversal of 75285657 is 75658257.

It is not a de Polignac number, because 75285657 - 2¹⁰ = 75284633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75285607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10723 + ... + 16295.

It is an arithmetic number, because the mean of its divisors is an integer number (4830800).

Almost surely, 2^75285657 is an apocalyptic number.

It is an amenable number.

75285657 is a deficient number, since it is larger than the sum of its proper divisors (40653543).

75285657 is a wasteful number, since it uses less digits than its factorization.

75285657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677 (or 5674 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 75285657 is about 8676.7307783519. The cubic root of 75285657 is about 422.2510597750.

The spelling of 75285657 in words is "seventy-five million, two hundred eighty-five thousand, six hundred fifty-seven".