74947253 has 4 divisors (see below), whose sum is σ = 74966700. Its totient is φ = 74927808.

The previous prime is 74947231. The next prime is 74947261. The reversal of 74947253 is 35274947.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66227044 + 8720209 = 8138^2 + 2953^2 .

It is a cyclic number.

It is not a de Polignac number, because 74947253 - 2²⁴ = 58170037 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 74947253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74947283) 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, 1778 + ... + 12371.

It is an arithmetic number, because the mean of its divisors is an integer number (18741675).

Almost surely, 2^74947253 is an apocalyptic number.

It is an amenable number.

74947253 is a deficient number, since it is larger than the sum of its proper divisors (19447).

74947253 is a wasteful number, since it uses less digits than its factorization.

74947253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19446.

The product of its digits is 211680, while the sum is 41.

The square root of 74947253 is about 8657.2081527476. The cubic root of 74947253 is about 421.6174460367.

The spelling of 74947253 in words is "seventy-four million, nine hundred forty-seven thousand, two hundred fifty-three".