75117222 has 48 divisors (see below), whose sum is σ = 172224000. Its totient is φ = 23596272.

The previous prime is 75117209. The next prime is 75117223. The reversal of 75117222 is 22271157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75117223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81279 + ... + 82197.

It is an arithmetic number, because the mean of its divisors is an integer number (3588000).

Almost surely, 2^75117222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75117222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86112000).

75117222 is an abundant number, since it is smaller than the sum of its proper divisors (97106778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75117222 is a wasteful number, since it uses less digits than its factorization.

75117222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1182 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 75117222 is about 8667.0192107783. The cubic root of 75117222 is about 421.9359268713.

Adding to 75117222 its reverse (22271157), we get a palindrome (97388379).

The spelling of 75117222 in words is "seventy-five million, one hundred seventeen thousand, two hundred twenty-two".