75213018 has 12 divisors (see below), whose sum is σ = 162961578. Its totient is φ = 25071000.

The previous prime is 75213007. The next prime is 75213029. The reversal of 75213018 is 81031257.

It is an interprime number because it is at equal distance from previous prime (75213007) and next prime (75213029).

It can be written as a sum of positive squares in only one way, i.e., 59028489 + 16184529 = 7683^2 + 4023^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75212982 and 75213000.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2089233 + ... + 2089268.

Almost surely, 2^75213018 is an apocalyptic number.

75213018 is an abundant number, since it is smaller than the sum of its proper divisors (87748560).

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

75213018 is a wasteful number, since it uses less digits than its factorization.

75213018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178509 (or 4178506 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 75213018 is about 8672.5439174443. The cubic root of 75213018 is about 422.1152137817.

The spelling of 75213018 in words is "seventy-five million, two hundred thirteen thousand, eighteen".