71500879 has 2 divisors, whose sum is σ = 71500880. Its totient is φ = 71500878.

The previous prime is 71500837. The next prime is 71500939. The reversal of 71500879 is 97800517.

It is a weak prime.

It is an emirp because it is prime and its reverse (97800517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71500879 - 2¹¹ = 71498831 is a prime.

It is a super-2 number, since 2×71500879² = 10224751395545282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71500379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35750439 + 35750440.

It is an arithmetic number, because the mean of its divisors is an integer number (35750440).

Almost surely, 2^71500879 is an apocalyptic number.

71500879 is a deficient number, since it is larger than the sum of its proper divisors (1).

71500879 is an equidigital number, since it uses as much as digits as its factorization.

71500879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 71500879 is about 8455.8192388437. The cubic root of 71500879 is about 415.0532258630.

The spelling of 71500879 in words is "seventy-one million, five hundred thousand, eight hundred seventy-nine".