71322061 has 2 divisors, whose sum is σ = 71322062. Its totient is φ = 71322060.

The previous prime is 71322007. The next prime is 71322071. The reversal of 71322061 is 16022317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42902500 + 28419561 = 6550^2 + 5331^2 .

It is a cyclic number.

It is not a de Polignac number, because 71322061 - 2¹¹ = 71320013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71322071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35661030 + 35661031.

It is an arithmetic number, because the mean of its divisors is an integer number (35661031).

Almost surely, 2^71322061 is an apocalyptic number.

It is an amenable number.

71322061 is a deficient number, since it is larger than the sum of its proper divisors (1).

71322061 is an equidigital number, since it uses as much as digits as its factorization.

71322061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 71322061 is about 8445.2389545826. The cubic root of 71322061 is about 414.7069320047.

Adding to 71322061 its reverse (16022317), we get a palindrome (87344378).

The spelling of 71322061 in words is "seventy-one million, three hundred twenty-two thousand, sixty-one".