71055811 has 8 divisors (see below), whose sum is σ = 71907264. Its totient is φ = 70208040.

The previous prime is 71055797. The next prime is 71055821. The reversal of 71055811 is 11855017.

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 71055811 - 2⁵ = 71055779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71055811.

It is not an unprimeable number, because it can be changed into a prime (71055821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60516 + ... + 61678.

It is an arithmetic number, because the mean of its divisors is an integer number (8988408).

Almost surely, 2^71055811 is an apocalyptic number.

71055811 is a deficient number, since it is larger than the sum of its proper divisors (851453).

71055811 is a wasteful number, since it uses less digits than its factorization.

71055811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 71055811 is about 8429.4608961665. The cubic root of 71055811 is about 414.1902456706.

The spelling of 71055811 in words is "seventy-one million, fifty-five thousand, eight hundred eleven".