75000015 has 24 divisors (see below), whose sum is σ = 132769728. Its totient is φ = 39147840.

The previous prime is 75000007. The next prime is 75000017. The reversal of 75000015 is 51000057.

It is a happy number.

It is not a de Polignac number, because 75000015 - 2³ = 75000007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75000017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15616 + ... + 19845.

It is an arithmetic number, because the mean of its divisors is an integer number (5532072).

Almost surely, 2^75000015 is an apocalyptic number.

75000015 is a deficient number, since it is larger than the sum of its proper divisors (57769713).

75000015 is a wasteful number, since it uses less digits than its factorization.

75000015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35519 (or 35516 counting only the distinct ones).

The product of its (nonzero) digits is 175, while the sum is 18.

The square root of 75000015 is about 8660.2549038697. The cubic root of 75000015 is about 421.7163607653.

The spelling of 75000015 in words is "seventy-five million, fifteen", and thus it is an aban number and an uban number.