71500441 has 4 divisors (see below), whose sum is σ = 71812900. Its totient is φ = 71187984.

The previous prime is 71500427. The next prime is 71500459. The reversal of 71500441 is 14400517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14400517 = 439 ⋅32803.

It can be written as a sum of positive squares in 2 ways, for example, as 57699216 + 13801225 = 7596^2 + 3715^2 .

It is a cyclic number.

It is not a de Polignac number, because 71500441 - 2⁵ = 71500409 is a prime.

It is a super-2 number, since 2×71500441² = 10224626126388962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71500141) 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, 155886 + ... + 156343.

It is an arithmetic number, because the mean of its divisors is an integer number (17953225).

Almost surely, 2^71500441 is an apocalyptic number.

It is an amenable number.

71500441 is a deficient number, since it is larger than the sum of its proper divisors (312459).

71500441 is a wasteful number, since it uses less digits than its factorization.

71500441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312458.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 71500441 is about 8455.7933394803. The cubic root of 71500441 is about 415.0523783504.

Adding to 71500441 its reverse (14400517), we get a palindrome (85900958).

The spelling of 71500441 in words is "seventy-one million, five hundred thousand, four hundred forty-one".