75144994 has 16 divisors (see below), whose sum is σ = 115679520. Its totient is φ = 36590400.

The previous prime is 75144977. The next prime is 75144997. The reversal of 75144994 is 49944157.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 75144994.

It is not an unprimeable number, because it can be changed into a prime (75144997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33397 + ... + 35575.

It is an arithmetic number, because the mean of its divisors is an integer number (7229970).

Almost surely, 2^75144994 is an apocalyptic number.

75144994 is a deficient number, since it is larger than the sum of its proper divisors (40534526).

75144994 is a wasteful number, since it uses less digits than its factorization.

75144994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625.

The product of its digits is 181440, while the sum is 43.

The square root of 75144994 is about 8668.6212283154. The cubic root of 75144994 is about 421.9879192127.

The spelling of 75144994 in words is "seventy-five million, one hundred forty-four thousand, nine hundred ninety-four".