74949253 has 4 divisors (see below), whose sum is σ = 77533740. Its totient is φ = 72364768.

The previous prime is 74949247. The next prime is 74949263. The reversal of 74949253 is 35294947.

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 55606849 + 19342404 = 7457^2 + 4398^2 .

It is a cyclic number.

It is not a de Polignac number, because 74949253 - 2⁵ = 74949221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74949223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292200 + ... + 1292257.

It is an arithmetic number, because the mean of its divisors is an integer number (19383435).

Almost surely, 2^74949253 is an apocalyptic number.

It is an amenable number.

74949253 is a deficient number, since it is larger than the sum of its proper divisors (2584487).

74949253 is a wasteful number, since it uses less digits than its factorization.

74949253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584486.

The product of its digits is 272160, while the sum is 43.

The square root of 74949253 is about 8657.3236626570. The cubic root of 74949253 is about 421.6211963516.

The spelling of 74949253 in words is "seventy-four million, nine hundred forty-nine thousand, two hundred fifty-three".