75220135 has 4 divisors (see below), whose sum is σ = 90264168. Its totient is φ = 60176104.

The previous prime is 75220111. The next prime is 75220139. The reversal of 75220135 is 53102257.

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

It is a cyclic number.

It is not a de Polignac number, because 75220135 - 2⁷ = 75220007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75220139) 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, 7522009 + ... + 7522018.

It is an arithmetic number, because the mean of its divisors is an integer number (22566042).

Almost surely, 2^75220135 is an apocalyptic number.

75220135 is a deficient number, since it is larger than the sum of its proper divisors (15044033).

75220135 is a wasteful number, since it uses less digits than its factorization.

75220135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15044032.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 75220135 is about 8672.9542256373. The cubic root of 75220135 is about 422.1285275196.

The spelling of 75220135 in words is "seventy-five million, two hundred twenty thousand, one hundred thirty-five".