71159423 has 2 divisors, whose sum is σ = 71159424. Its totient is φ = 71159422.

The previous prime is 71159411. The next prime is 71159437. The reversal of 71159423 is 32495117.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71159423 - 2¹² = 71155327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71159423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71159483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35579711 + 35579712.

It is an arithmetic number, because the mean of its divisors is an integer number (35579712).

Almost surely, 2^71159423 is an apocalyptic number.

71159423 is a deficient number, since it is larger than the sum of its proper divisors (1).

71159423 is an equidigital number, since it uses as much as digits as its factorization.

71159423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 71159423 is about 8435.6044833788. The cubic root of 71159423 is about 414.3914688910.

The spelling of 71159423 in words is "seventy-one million, one hundred fifty-nine thousand, four hundred twenty-three".