71622151 has 2 divisors, whose sum is σ = 71622152. Its totient is φ = 71622150.

The previous prime is 71622137. The next prime is 71622157. The reversal of 71622151 is 15122617.

It is a strong prime.

It is an emirp because it is prime and its reverse (15122617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71622151 - 2¹³ = 71613959 is a prime.

It is a super-3 number, since 3×71622151³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71622157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35811075 + 35811076.

It is an arithmetic number, because the mean of its divisors is an integer number (35811076).

Almost surely, 2^71622151 is an apocalyptic number.

71622151 is a deficient number, since it is larger than the sum of its proper divisors (1).

71622151 is an equidigital number, since it uses as much as digits as its factorization.

71622151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 25.

The square root of 71622151 is about 8462.9871203967. The cubic root of 71622151 is about 415.2877493406.

Adding to 71622151 its reverse (15122617), we get a palindrome (86744768).

The spelling of 71622151 in words is "seventy-one million, six hundred twenty-two thousand, one hundred fifty-one".