71472871 has 4 divisors (see below), whose sum is σ = 71503744. Its totient is φ = 71442000.

The previous prime is 71472829. The next prime is 71472893. The reversal of 71472871 is 17827417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17827417 = 167 ⋅106751.

It is a 4-Lehmer number, since φ(71472871) divides (71472871-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71472871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71472871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71472671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11655 + ... + 16696.

It is an arithmetic number, because the mean of its divisors is an integer number (17875936).

Almost surely, 2^71472871 is an apocalyptic number.

71472871 is a deficient number, since it is larger than the sum of its proper divisors (30873).

71472871 is a wasteful number, since it uses less digits than its factorization.

71472871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30872.

The product of its digits is 21952, while the sum is 37.

The square root of 71472871 is about 8454.1629390496. The cubic root of 71472871 is about 414.9990245296. Note that the first 3 decimals are identical.

The spelling of 71472871 in words is "seventy-one million, four hundred seventy-two thousand, eight hundred seventy-one".