75222532 has 48 divisors (see below), whose sum is σ = 164892672. Its totient is φ = 29170080.

The previous prime is 75222509. The next prime is 75222557. The reversal of 75222532 is 23522257.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 75222532.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 86733 + ... + 87595.

It is an arithmetic number, because the mean of its divisors is an integer number (3435264).

Almost surely, 2^75222532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75222532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82446336).

75222532 is an abundant number, since it is smaller than the sum of its proper divisors (89670140).

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

75222532 is a wasteful number, since it uses less digits than its factorization.

75222532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168 (or 1166 counting only the distinct ones).

The product of its digits is 8400, while the sum is 28.

The square root of 75222532 is about 8673.0924127441. The cubic root of 75222532 is about 422.1330113870.

Adding to 75222532 its reverse (23522257), we get a palindrome (98744789).

It can be divided in two parts, 752225 and 32, that added together give a palindrome (752257).

The spelling of 75222532 in words is "seventy-five million, two hundred twenty-two thousand, five hundred thirty-two".