74137523 has 4 divisors (see below), whose sum is σ = 76529088. Its totient is φ = 71745960.

The previous prime is 74137517. The next prime is 74137537. The reversal of 74137523 is 32573147.

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 74137523 - 2²⁰ = 73088947 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 74137523.

It is not an unprimeable number, because it can be changed into a prime (74137423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195736 + ... + 1195797.

It is an arithmetic number, because the mean of its divisors is an integer number (19132272).

Almost surely, 2^74137523 is an apocalyptic number.

74137523 is a deficient number, since it is larger than the sum of its proper divisors (2391565).

74137523 is a wasteful number, since it uses less digits than its factorization.

74137523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391564.

The product of its digits is 17640, while the sum is 32.

The square root of 74137523 is about 8610.3149187472. The cubic root of 74137523 is about 420.0935600336.

The spelling of 74137523 in words is "seventy-four million, one hundred thirty-seven thousand, five hundred twenty-three".