71090801 has 6 divisors (see below), whose sum is σ = 73065510. Its totient is φ = 69168096.

The previous prime is 71090791. The next prime is 71090813. The reversal of 71090801 is 10809017.

It can be written as a sum of positive squares in 3 ways, for example, as 59367025 + 11723776 = 7705^2 + 3424^2 .

It is not a de Polignac number, because 71090801 - 2¹⁴ = 71074417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71090881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24596 + ... + 27333.

It is an arithmetic number, because the mean of its divisors is an integer number (12177585).

Almost surely, 2^71090801 is an apocalyptic number.

It is an amenable number.

71090801 is a deficient number, since it is larger than the sum of its proper divisors (1974709).

71090801 is an equidigital number, since it uses as much as digits as its factorization.

71090801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52003 (or 51966 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 71090801 is about 8431.5360996677. The cubic root of 71090801 is about 414.2582210564.

Adding to 71090801 its reverse (10809017), we get a palindrome (81899818).

The spelling of 71090801 in words is "seventy-one million, ninety thousand, eight hundred one".