75900321 has 24 divisors (see below), whose sum is σ = 129939264. Its totient is φ = 43370640.

The previous prime is 75900281. The next prime is 75900353. The reversal of 75900321 is 12300957.

It is not a de Polignac number, because 75900321 - 2¹⁰ = 75899297 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75900521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20610 + ... + 24011.

It is an arithmetic number, because the mean of its divisors is an integer number (5414136).

Almost surely, 2^75900321 is an apocalyptic number.

It is an amenable number.

75900321 is a deficient number, since it is larger than the sum of its proper divisors (54038943).

75900321 is an equidigital number, since it uses as much as digits as its factorization.

75900321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44643 (or 44631 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 75900321 is about 8712.0790285672. The cubic root of 75900321 is about 423.3970920287.

The spelling of 75900321 in words is "seventy-five million, nine hundred thousand, three hundred twenty-one".