75185145 has 32 divisors (see below), whose sum is σ = 152759040. Its totient is φ = 34369920.

The previous prime is 75185141. The next prime is 75185161. The reversal of 75185145 is 54158157.

It is not a de Polignac number, because 75185145 - 2² = 75185141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75185141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38836 + ... + 40725.

It is an arithmetic number, because the mean of its divisors is an integer number (4773720).

Almost surely, 2^75185145 is an apocalyptic number.

It is an amenable number.

75185145 is an abundant number, since it is smaller than the sum of its proper divisors (77573895).

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

75185145 is a wasteful number, since it uses less digits than its factorization.

75185145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79582 (or 79576 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 75185145 is about 8670.9368006000. The cubic root of 75185145 is about 422.0630638066.

The spelling of 75185145 in words is "seventy-five million, one hundred eighty-five thousand, one hundred forty-five".