71895491 has 2 divisors, whose sum is σ = 71895492. Its totient is φ = 71895490.

The previous prime is 71895457. The next prime is 71895511. The reversal of 71895491 is 19459817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71895491 - 2¹⁸ = 71633347 is a prime.

It is a super-2 number, since 2×71895491² = 10337923252262162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71895391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35947745 + 35947746.

It is an arithmetic number, because the mean of its divisors is an integer number (35947746).

Almost surely, 2^71895491 is an apocalyptic number.

71895491 is a deficient number, since it is larger than the sum of its proper divisors (1).

71895491 is an equidigital number, since it uses as much as digits as its factorization.

71895491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 44.

The square root of 71895491 is about 8479.1208860353. The cubic root of 71895491 is about 415.8153824386.

The spelling of 71895491 in words is "seventy-one million, eight hundred ninety-five thousand, four hundred ninety-one".