75115020 has 48 divisors (see below), whose sum is σ = 210728448. Its totient is φ = 19992000.

The previous prime is 75115009. The next prime is 75115049. The reversal of 75115020 is 2051157.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44227 + ... + 45893.

It is an arithmetic number, because the mean of its divisors is an integer number (4390176).

Almost surely, 2^75115020 is an apocalyptic number.

It is an amenable number.

75115020 is an abundant number, since it is smaller than the sum of its proper divisors (135613428).

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

75115020 is a wasteful number, since it uses less digits than its factorization.

75115020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430 (or 2428 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 75115020 is about 8666.8921765533. The cubic root of 75115020 is about 421.9318039287.

Adding to 75115020 its reverse (2051157), we get a palindrome (77166177).

The spelling of 75115020 in words is "seventy-five million, one hundred fifteen thousand, twenty".