75221575 has 48 divisors (see below), whose sum is σ = 111930336. Its totient is φ = 49420800.

The previous prime is 75221543. The next prime is 75221579. The reversal of 75221575 is 57512257.

It is not a de Polignac number, because 75221575 - 2⁵ = 75221543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75221575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75221579) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189277 + ... + 189673.

It is an arithmetic number, because the mean of its divisors is an integer number (2331882).

Almost surely, 2^75221575 is an apocalyptic number.

75221575 is a deficient number, since it is larger than the sum of its proper divisors (36708761).

75221575 is a wasteful number, since it uses less digits than its factorization.

75221575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 479 counting only the distinct ones).

The product of its digits is 24500, while the sum is 34.

The square root of 75221575 is about 8673.0372419355. The cubic root of 75221575 is about 422.1312212186.

The spelling of 75221575 in words is "seventy-five million, two hundred twenty-one thousand, five hundred seventy-five".