75500145 has 96 divisors (see below), whose sum is σ = 165514752. Its totient is φ = 31021056.

The previous prime is 75500123. The next prime is 75500153. The reversal of 75500145 is 54100557.

It is not a de Polignac number, because 75500145 - 2⁸ = 75499889 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 122859 + ... + 123471.

It is an arithmetic number, because the mean of its divisors is an integer number (1724112).

Almost surely, 2^75500145 is an apocalyptic number.

It is an amenable number.

75500145 is an abundant number, since it is smaller than the sum of its proper divisors (90014607).

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

75500145 is a wasteful number, since it uses less digits than its factorization.

75500145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 75500145 is about 8689.0819422998. The cubic root of 75500145 is about 422.6516757574.

The spelling of 75500145 in words is "seventy-five million, five hundred thousand, one hundred forty-five".