71172801 has 24 divisors (see below), whose sum is σ = 117746304. Its totient is φ = 40582080.

The previous prime is 71172779. The next prime is 71172847. The reversal of 71172801 is 10827117.

It is not a de Polignac number, because 71172801 - 2⁵ = 71172769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71172301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37956 + ... + 39786.

It is an arithmetic number, because the mean of its divisors is an integer number (4906096).

Almost surely, 2^71172801 is an apocalyptic number.

It is an amenable number.

71172801 is a deficient number, since it is larger than the sum of its proper divisors (46573503).

71172801 is a wasteful number, since it uses less digits than its factorization.

71172801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461 (or 2458 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 71172801 is about 8436.3973946229. The cubic root of 71172801 is about 414.4174358511.

Adding to 71172801 its reverse (10827117), we get a palindrome (81999918).

The spelling of 71172801 in words is "seventy-one million, one hundred seventy-two thousand, eight hundred one".