75521872 has 20 divisors (see below), whose sum is σ = 147835156. Its totient is φ = 37370880.

The previous prime is 75521869. The next prime is 75521881. The reversal of 75521872 is 27812557.

It can be written as a sum of positive squares in 2 ways, for example, as 28132416 + 47389456 = 5304^2 + 6884^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22779 + ... + 25882.

Almost surely, 2^75521872 is an apocalyptic number.

It is an amenable number.

75521872 is a deficient number, since it is larger than the sum of its proper divisors (72313284).

75521872 is a wasteful number, since it uses less digits than its factorization.

75521872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48766 (or 48760 counting only the distinct ones).

The product of its digits is 39200, while the sum is 37.

The square root of 75521872 is about 8690.3320995230. The cubic root of 75521872 is about 422.6922146297.

The spelling of 75521872 in words is "seventy-five million, five hundred twenty-one thousand, eight hundred seventy-two".