71353481 has 2 divisors, whose sum is σ = 71353482. Its totient is φ = 71353480.

The previous prime is 71353439. The next prime is 71353483. The reversal of 71353481 is 18435317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 3455881 = 8240^2 + 1859^2 .

It is a cyclic number.

It is not a de Polignac number, because 71353481 - 2¹⁸ = 71091337 is a prime.

It is a super-2 number, since 2×71353481² = 10182638501634722, which contains 22 as substring.

Together with 71353483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71353483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35676740 + 35676741.

It is an arithmetic number, because the mean of its divisors is an integer number (35676741).

Almost surely, 2^71353481 is an apocalyptic number.

It is an amenable number.

71353481 is a deficient number, since it is larger than the sum of its proper divisors (1).

71353481 is an equidigital number, since it uses as much as digits as its factorization.

71353481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 71353481 is about 8447.0989694687. The cubic root of 71353481 is about 414.7678209671.

Adding to 71353481 its reverse (18435317), we get a palindrome (89788798).

The spelling of 71353481 in words is "seventy-one million, three hundred fifty-three thousand, four hundred eighty-one".