71127253 has 4 divisors (see below), whose sum is σ = 71166348. Its totient is φ = 71088160.

The previous prime is 71127233. The next prime is 71127271. The reversal of 71127253 is 35272117.

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 43322724 + 27804529 = 6582^2 + 5273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71127253 is a prime.

It is a super-2 number, since 2×71127253² = 10118172238652018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71127233) 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, 16678 + ... + 20503.

It is an arithmetic number, because the mean of its divisors is an integer number (17791587).

Almost surely, 2^71127253 is an apocalyptic number.

It is an amenable number.

71127253 is a deficient number, since it is larger than the sum of its proper divisors (39095).

71127253 is a wasteful number, since it uses less digits than its factorization.

71127253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39094.

The product of its digits is 2940, while the sum is 28.

The square root of 71127253 is about 8433.6974690820. The cubic root of 71127253 is about 414.3290129650.

It can be divided in two parts, 7112 and 7253, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 71127253 in words is "seventy-one million, one hundred twenty-seven thousand, two hundred fifty-three".