71590081 has 8 divisors (see below), whose sum is σ = 76420800. Its totient is φ = 66865680.

The previous prime is 71590063. The next prime is 71590091. The reversal of 71590081 is 18009517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71590081 - 2⁵ = 71590049 is a prime.

It is a super-2 number, since 2×71590081² = 10250279395173122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71590031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25186 + ... + 27883.

It is an arithmetic number, because the mean of its divisors is an integer number (9552600).

Almost surely, 2^71590081 is an apocalyptic number.

71590081 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

71590081 is a deficient number, since it is larger than the sum of its proper divisors (4830719).

71590081 is a wasteful number, since it uses less digits than its factorization.

71590081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53159.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 71590081 is about 8461.0921871825. The cubic root of 71590081 is about 415.2257561060.

Adding to 71590081 its reverse (18009517), we get a palindrome (89599598).

The spelling of 71590081 in words is "seventy-one million, five hundred ninety thousand, eighty-one".