74524513 has 4 divisors (see below), whose sum is σ = 85170880. Its totient is φ = 63878148.

The previous prime is 74524507. The next prime is 74524529. The reversal of 74524513 is 31542547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74524513 - 2⁹ = 74524001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74524543) 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, 5323173 + ... + 5323186.

It is an arithmetic number, because the mean of its divisors is an integer number (21292720).

Almost surely, 2^74524513 is an apocalyptic number.

It is an amenable number.

74524513 is a deficient number, since it is larger than the sum of its proper divisors (10646367).

74524513 is a wasteful number, since it uses less digits than its factorization.

74524513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10646366.

The product of its digits is 16800, while the sum is 31.

The square root of 74524513 is about 8632.7581339917. The cubic root of 74524513 is about 420.8232398150.

The spelling of 74524513 in words is "seventy-four million, five hundred twenty-four thousand, five hundred thirteen".