75045623 has 4 divisors (see below), whose sum is σ = 75070008. Its totient is φ = 75021240.

The previous prime is 75045613. The next prime is 75045631. The reversal of 75045623 is 32654057.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75045623 - 2⁶ = 75045559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75045623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75045613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6773 + ... + 13998.

It is an arithmetic number, because the mean of its divisors is an integer number (18767502).

Almost surely, 2^75045623 is an apocalyptic number.

75045623 is a deficient number, since it is larger than the sum of its proper divisors (24385).

75045623 is a wasteful number, since it uses less digits than its factorization.

75045623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24384.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 75045623 is about 8662.8876825225. The cubic root of 75045623 is about 421.8018262700.

The spelling of 75045623 in words is "seventy-five million, forty-five thousand, six hundred twenty-three".