75032145 has 24 divisors (see below), whose sum is σ = 131279616. Its totient is φ = 39640608.

The previous prime is 75032143. The next prime is 75032179. The reversal of 75032145 is 54123057.

It is a happy number.

It is not a de Polignac number, because 75032145 - 2¹ = 75032143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75032143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2977 + ... + 12606.

It is an arithmetic number, because the mean of its divisors is an integer number (5469984).

Almost surely, 2^75032145 is an apocalyptic number.

It is an amenable number.

75032145 is a deficient number, since it is larger than the sum of its proper divisors (56247471).

75032145 is a wasteful number, since it uses less digits than its factorization.

75032145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15701 (or 15698 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 75032145 is about 8662.1097314684. The cubic root of 75032145 is about 421.7765732520.

The spelling of 75032145 in words is "seventy-five million, thirty-two thousand, one hundred forty-five".