71106551 has 2 divisors, whose sum is σ = 71106552. Its totient is φ = 71106550.

The previous prime is 71106527. The next prime is 71106577. The reversal of 71106551 is 15560117.

It is an a-pointer prime, because the next prime (71106577) can be obtained adding 71106551 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71106551 is a prime.

It is a super-2 number, since 2×71106551² = 10112283190231202, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71106551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71106251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35553275 + 35553276.

It is an arithmetic number, because the mean of its divisors is an integer number (35553276).

Almost surely, 2^71106551 is an apocalyptic number.

71106551 is a deficient number, since it is larger than the sum of its proper divisors (1).

71106551 is an equidigital number, since it uses as much as digits as its factorization.

71106551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 71106551 is about 8432.4700414529. The cubic root of 71106551 is about 414.2888114428.

Adding to 71106551 its reverse (15560117), we get a palindrome (86666668).

The spelling of 71106551 in words is "seventy-one million, one hundred six thousand, five hundred fifty-one".