75222135 has 16 divisors (see below), whose sum is σ = 133728480. Its totient is φ = 40118400.

The previous prime is 75222079. The next prime is 75222139. The reversal of 75222135 is 53122257.

75222135 is a `hidden beast` number, since 7 + 522 + 2 + 135 = 666.

It is not a de Polignac number, because 75222135 - 2⁹ = 75221623 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 75222099 and 75222108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75222139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278466 + ... + 278735.

It is an arithmetic number, because the mean of its divisors is an integer number (8358030).

Almost surely, 2^75222135 is an apocalyptic number.

75222135 is a deficient number, since it is larger than the sum of its proper divisors (58506345).

75222135 is a wasteful number, since it uses less digits than its factorization.

75222135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557215 (or 557209 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 75222135 is about 8673.0695258369. The cubic root of 75222135 is about 422.1322687589.

It can be divided in two parts, 75222 and 135, that added together give a palindrome (75357).

The spelling of 75222135 in words is "seventy-five million, two hundred twenty-two thousand, one hundred thirty-five".