75533057 has 4 divisors (see below), whose sum is σ = 79976196. Its totient is φ = 71089920.

The previous prime is 75533041. The next prime is 75533063. The reversal of 75533057 is 75033557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75033557 = 197 ⋅380881.

It can be written as a sum of positive squares in 2 ways, for example, as 47665216 + 27867841 = 6904^2 + 5279^2 .

It is not a de Polignac number, because 75533057 - 2⁴ = 75533041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75533257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2221544 + ... + 2221577.

It is an arithmetic number, because the mean of its divisors is an integer number (19994049).

Almost surely, 2^75533057 is an apocalyptic number.

It is an amenable number.

75533057 is a deficient number, since it is larger than the sum of its proper divisors (4443139).

75533057 is a wasteful number, since it uses less digits than its factorization.

75533057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4443138.

The product of its (nonzero) digits is 55125, while the sum is 35.

The square root of 75533057 is about 8690.9756069155. The cubic root of 75533057 is about 422.7130808985.

Subtracting from 75533057 its reverse (75033557), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 75533057 in words is "seventy-five million, five hundred thirty-three thousand, fifty-seven".