71835081 has 16 divisors (see below), whose sum is σ = 101585664. Its totient is φ = 44996864.

The previous prime is 71835077. The next prime is 71835107. The reversal of 71835081 is 18053817.

It is a cyclic number.

It is not a de Polignac number, because 71835081 - 2² = 71835077 is a prime.

It is a super-2 number, since 2×71835081² = 10320557724553122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (71835041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55615 + ... + 56891.

It is an arithmetic number, because the mean of its divisors is an integer number (6349104).

Almost surely, 2^71835081 is an apocalyptic number.

It is an amenable number.

71835081 is a deficient number, since it is larger than the sum of its proper divisors (29750583).

71835081 is a wasteful number, since it uses less digits than its factorization.

71835081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 71835081 is about 8475.5578577460. The cubic root of 71835081 is about 415.6988872051.

Adding to 71835081 its reverse (18053817), we get a palindrome (89888898).

The spelling of 71835081 in words is "seventy-one million, eight hundred thirty-five thousand, eighty-one".