71253671 has 4 divisors (see below), whose sum is σ = 71280144. Its totient is φ = 71227200.

The previous prime is 71253659. The next prime is 71253697. The reversal of 71253671 is 17635217.

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

It is a cyclic number.

It is not a de Polignac number, because 71253671 - 2⁶ = 71253607 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 (71253631) 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 3 ways as a sum of consecutive naturals, for example, 8675 + ... + 14756.

It is an arithmetic number, because the mean of its divisors is an integer number (17820036).

Almost surely, 2^71253671 is an apocalyptic number.

71253671 is a deficient number, since it is larger than the sum of its proper divisors (26473).

71253671 is a wasteful number, since it uses less digits than its factorization.

71253671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26472.

The product of its digits is 8820, while the sum is 32.

The square root of 71253671 is about 8441.1889565392. The cubic root of 71253671 is about 414.5743368591.

Adding to 71253671 its reverse (17635217), we get a palindrome (88888888).

The spelling of 71253671 in words is "seventy-one million, two hundred fifty-three thousand, six hundred seventy-one".