56811 has 8 divisors (see below), whose sum is σ = 78480. Its totient is φ = 36512.

The previous prime is 56809. The next prime is 56813. The reversal of 56811 is 11865.

It is an interprime number because it is at equal distance from previous prime (56809) and next prime (56813).

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 56811 - 2¹ = 56809 is a prime.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 56811.

It is not an unprimeable number, because it can be changed into a prime (56813) 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, 240 + ... + 413.

It is an arithmetic number, because the mean of its divisors is an integer number (9810).

2⁵⁶⁸¹¹ is an apocalyptic number.

56811 is a deficient number, since it is larger than the sum of its proper divisors (21669).

56811 is a wasteful number, since it uses less digits than its factorization.

56811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685.

The product of its digits is 240, while the sum is 21.

The square root of 56811 is about 238.3505821264. The cubic root of 56811 is about 38.4424281473.

The spelling of 56811 in words is "fifty-six thousand, eight hundred eleven".