74471253 has 4 divisors (see below), whose sum is σ = 99295008. Its totient is φ = 49647500.

The previous prime is 74471249. The next prime is 74471291. The reversal of 74471253 is 35217447.

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: 35217447 = 3 ⋅11739149.

It is a cyclic number.

It is not a de Polignac number, because 74471253 - 2² = 74471249 is a prime.

It is a super-3 number, since 3×74471253³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74471213) 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, 12411873 + ... + 12411878.

It is an arithmetic number, because the mean of its divisors is an integer number (24823752).

Almost surely, 2^74471253 is an apocalyptic number.

It is an amenable number.

74471253 is a deficient number, since it is larger than the sum of its proper divisors (24823755).

74471253 is a wasteful number, since it uses less digits than its factorization.

74471253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24823754.

The product of its digits is 23520, while the sum is 33.

The square root of 74471253 is about 8629.6728211445. The cubic root of 74471253 is about 420.7229668254.

The spelling of 74471253 in words is "seventy-four million, four hundred seventy-one thousand, two hundred fifty-three".