71402497 has 2 divisors, whose sum is σ = 71402498. Its totient is φ = 71402496.

The previous prime is 71402483. The next prime is 71402519. The reversal of 71402497 is 79420417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46362481 + 25040016 = 6809^2 + 5004^2 .

It is a cyclic number.

It is not a de Polignac number, because 71402497 - 2¹¹ = 71400449 is a prime.

It is equal to p_4195618 and since 71402497 and 4195618 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (71402417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35701248 + 35701249.

It is an arithmetic number, because the mean of its divisors is an integer number (35701249).

Almost surely, 2^71402497 is an apocalyptic number.

It is an amenable number.

71402497 is a deficient number, since it is larger than the sum of its proper divisors (1).

71402497 is an equidigital number, since it uses as much as digits as its factorization.

71402497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 71402497 is about 8449.9998224852. Note that the first 3 decimals coincide. The cubic root of 71402497 is about 414.8627736157.

The spelling of 71402497 in words is "seventy-one million, four hundred two thousand, four hundred ninety-seven".