71228253 has 16 divisors (see below), whose sum is σ = 97450496. Its totient is φ = 46252080.

The previous prime is 71228251. The next prime is 71228257. The reversal of 71228253 is 35282217.

It is not a de Polignac number, because 71228253 - 2¹ = 71228251 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 71228253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71228251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73176 + ... + 74142.

It is an arithmetic number, because the mean of its divisors is an integer number (6090656).

Almost surely, 2^71228253 is an apocalyptic number.

It is an amenable number.

71228253 is a deficient number, since it is larger than the sum of its proper divisors (26222243).

71228253 is a wasteful number, since it uses less digits than its factorization.

71228253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its digits is 6720, while the sum is 30.

The square root of 71228253 is about 8439.6832286526. The cubic root of 71228253 is about 414.5250345864.

The spelling of 71228253 in words is "seventy-one million, two hundred twenty-eight thousand, two hundred fifty-three".