74512273 has 4 divisors (see below), whose sum is σ = 81286128. Its totient is φ = 67738420.

The previous prime is 74512271. The next prime is 74512289. The reversal of 74512273 is 37221547.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37221547 = 11 ⋅3383777.

It is a cyclic number.

It is not a de Polignac number, because 74512273 - 2¹ = 74512271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74512271) 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, 3386911 + ... + 3386932.

It is an arithmetic number, because the mean of its divisors is an integer number (20321532).

Almost surely, 2^74512273 is an apocalyptic number.

It is an amenable number.

74512273 is a deficient number, since it is larger than the sum of its proper divisors (6773855).

74512273 is a wasteful number, since it uses less digits than its factorization.

74512273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6773854.

The product of its digits is 11760, while the sum is 31.

The square root of 74512273 is about 8632.0491773391. The cubic root of 74512273 is about 420.8001997070.

The spelling of 74512273 in words is "seventy-four million, five hundred twelve thousand, two hundred seventy-three".