71257367 has 2 divisors, whose sum is σ = 71257368. Its totient is φ = 71257366.

The previous prime is 71257363. The next prime is 71257369. The reversal of 71257367 is 76375217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71257367 - 2² = 71257363 is a prime.

It is a super-2 number, since 2×71257367² = 10155224703545378, which contains 22 as substring.

Together with 71257369, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71257367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71257363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35628683 + 35628684.

It is an arithmetic number, because the mean of its divisors is an integer number (35628684).

Almost surely, 2^71257367 is an apocalyptic number.

71257367 is a deficient number, since it is larger than the sum of its proper divisors (1).

71257367 is an equidigital number, since it uses as much as digits as its factorization.

71257367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61740, while the sum is 38.

The square root of 71257367 is about 8441.4078802058. The cubic root of 71257367 is about 414.5815048653.

The spelling of 71257367 in words is "seventy-one million, two hundred fifty-seven thousand, three hundred sixty-seven".