75575321 has 4 divisors (see below), whose sum is σ = 75609444. Its totient is φ = 75541200.

The previous prime is 75575299. The next prime is 75575351. The reversal of 75575321 is 12357557.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18361225 + 57214096 = 4285^2 + 7564^2 .

It is a cyclic number.

It is not a de Polignac number, because 75575321 - 2¹⁴ = 75558937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75575351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13490 + ... + 18251.

It is an arithmetic number, because the mean of its divisors is an integer number (18902361).

Almost surely, 2^75575321 is an apocalyptic number.

It is an amenable number.

75575321 is a deficient number, since it is larger than the sum of its proper divisors (34123).

75575321 is a wasteful number, since it uses less digits than its factorization.

75575321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34122.

The product of its digits is 36750, while the sum is 35.

The square root of 75575321 is about 8693.4067545468. The cubic root of 75575321 is about 422.7919082589.

The spelling of 75575321 in words is "seventy-five million, five hundred seventy-five thousand, three hundred twenty-one".