71365951 has 2 divisors, whose sum is σ = 71365952. Its totient is φ = 71365950.

The previous prime is 71365909. The next prime is 71365961. The reversal of 71365951 is 15956317.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71365951 - 2⁷ = 71365823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71365951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71365901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35682975 + 35682976.

It is an arithmetic number, because the mean of its divisors is an integer number (35682976).

Almost surely, 2^71365951 is an apocalyptic number.

71365951 is a deficient number, since it is larger than the sum of its proper divisors (1).

71365951 is an equidigital number, since it uses as much as digits as its factorization.

71365951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 37.

The square root of 71365951 is about 8447.8370604552. The cubic root of 71365951 is about 414.7919816826.

The spelling of 71365951 in words is "seventy-one million, three hundred sixty-five thousand, nine hundred fifty-one".