71216151 has 4 divisors (see below), whose sum is σ = 94954872. Its totient is φ = 47477432.

The previous prime is 71216149. The next prime is 71216183. The reversal of 71216151 is 15161217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15161217 = 3 ⋅5053739.

It is a cyclic number.

It is not a de Polignac number, because 71216151 - 2¹ = 71216149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71216251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11869356 + ... + 11869361.

It is an arithmetic number, because the mean of its divisors is an integer number (23738718).

Almost surely, 2^71216151 is an apocalyptic number.

71216151 is a deficient number, since it is larger than the sum of its proper divisors (23738721).

71216151 is a wasteful number, since it uses less digits than its factorization.

71216151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23738720.

The product of its digits is 420, while the sum is 24.

The square root of 71216151 is about 8438.9662281585. The cubic root of 71216151 is about 414.5015567018.

Adding to 71216151 its reverse (15161217), we get a palindrome (86377368).

The spelling of 71216151 in words is "seventy-one million, two hundred sixteen thousand, one hundred fifty-one".