71491283 has 2 divisors, whose sum is σ = 71491284. Its totient is φ = 71491282.

The previous prime is 71491271. The next prime is 71491333. The reversal of 71491283 is 38219417.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71491283 - 2⁴ = 71491267 is a prime.

It is a super-2 number, since 2×71491283² = 10222007089972178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71491213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35745641 + 35745642.

It is an arithmetic number, because the mean of its divisors is an integer number (35745642).

Almost surely, 2^71491283 is an apocalyptic number.

71491283 is a deficient number, since it is larger than the sum of its proper divisors (1).

71491283 is an equidigital number, since it uses as much as digits as its factorization.

71491283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 71491283 is about 8455.2517999170. The cubic root of 71491283 is about 415.0346571918.

The spelling of 71491283 in words is "seventy-one million, four hundred ninety-one thousand, two hundred eighty-three".