71428583 has 2 divisors, whose sum is σ = 71428584. Its totient is φ = 71428582.

The previous prime is 71428571. The next prime is 71428589. The reversal of 71428583 is 38582417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71428583 - 2¹⁴ = 71412199 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71428589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35714291 + 35714292.

It is an arithmetic number, because the mean of its divisors is an integer number (35714292).

Almost surely, 2^71428583 is an apocalyptic number.

71428583 is a deficient number, since it is larger than the sum of its proper divisors (1).

71428583 is an equidigital number, since it uses as much as digits as its factorization.

71428583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 71428583 is about 8451.5432318601. The cubic root of 71428583 is about 414.9132890884.

The spelling of 71428583 in words is "seventy-one million, four hundred twenty-eight thousand, five hundred eighty-three".