75022530 has 128 divisors (see below), whose sum is σ = 213497856. Its totient is φ = 16665600.

The previous prime is 75022529. The next prime is 75022531. The reversal of 75022530 is 3522057.

It is an interprime number because it is at equal distance from previous prime (75022529) and next prime (75022531).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 75022530.

It is not an unprimeable number, because it can be changed into a prime (75022531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 241075 + ... + 241385.

It is an arithmetic number, because the mean of its divisors is an integer number (1667952).

Almost surely, 2^75022530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75022530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106748928).

75022530 is an abundant number, since it is smaller than the sum of its proper divisors (138475326).

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

75022530 is a wasteful number, since it uses less digits than its factorization.

75022530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 75022530 is about 8661.5547103277. The cubic root of 75022530 is about 421.7585562853.

Adding to 75022530 its reverse (3522057), we get a palindrome (78544587).

The spelling of 75022530 in words is "seventy-five million, twenty-two thousand, five hundred thirty".