71050805 has 16 divisors (see below), whose sum is σ = 97751424. Its totient is φ = 48565440.

The previous prime is 71050741. The next prime is 71050813. The reversal of 71050805 is 50805017.

71050805 = 474² + 475² + ... + 683².

It is not a de Polignac number, because 71050805 - 2⁶ = 71050741 is a prime.

It is a super-2 number, since 2×71050805² = 10096433782296050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8519 + ... + 14651.

It is an arithmetic number, because the mean of its divisors is an integer number (6109464).

Almost surely, 2^71050805 is an apocalyptic number.

It is an amenable number.

71050805 is a deficient number, since it is larger than the sum of its proper divisors (26700619).

71050805 is a wasteful number, since it uses less digits than its factorization.

71050805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6476.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 71050805 is about 8429.1639561703. The cubic root of 71050805 is about 414.1805186451.

It can be divided in two parts, 710 and 50805, that added together give a palindrome (51515).

The spelling of 71050805 in words is "seventy-one million, fifty thousand, eight hundred five".