75525330 has 48 divisors (see below), whose sum is σ = 189524160. Its totient is φ = 19260384.

The previous prime is 75525313. The next prime is 75525341. The reversal of 75525330 is 3352557.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13491 + ... + 18249.

It is an arithmetic number, because the mean of its divisors is an integer number (3948420).

Almost surely, 2^75525330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75525330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94762080).

75525330 is an abundant number, since it is smaller than the sum of its proper divisors (113998830).

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

75525330 is a wasteful number, since it uses less digits than its factorization.

75525330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815 (or 4792 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 30.

The square root of 75525330 is about 8690.5310539690. The cubic root of 75525330 is about 422.6986659501.

Adding to 75525330 its reverse (3352557), we get a palindrome (78877887).

It can be divided in two parts, 75525 and 330, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 75525330 in words is "seventy-five million, five hundred twenty-five thousand, three hundred thirty".