745116523 has 4 divisors (see below), whose sum is σ = 752350768. Its totient is φ = 737882280.

The previous prime is 745116509. The next prime is 745116539. The reversal of 745116523 is 325611547.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745116523 is a prime.

It is a super-3 number, since 3×745116523³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745116553) 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, 3616968 + ... + 3617173.

It is an arithmetic number, because the mean of its divisors is an integer number (188087692).

Almost surely, 2^745116523 is an apocalyptic number.

745116523 is a deficient number, since it is larger than the sum of its proper divisors (7234245).

745116523 is a wasteful number, since it uses less digits than its factorization.

745116523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234244.

The product of its digits is 25200, while the sum is 34.

The square root of 745116523 is about 27296.8225806595. The cubic root of 745116523 is about 906.5840304737.

The spelling of 745116523 in words is "seven hundred forty-five million, one hundred sixteen thousand, five hundred twenty-three".