56142811 has 8 divisors (see below), whose sum is σ = 58165200. Its totient is φ = 54126240.

The previous prime is 56142803. The next prime is 56142859. The reversal of 56142811 is 11824165.

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 56142811 - 2³ = 56142803 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 56142811.

It is not an unprimeable number, because it can be changed into a prime (56142881) 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, 30096 + ... + 31906.

It is an arithmetic number, because the mean of its divisors is an integer number (7270650).

Almost surely, 2^56142811 is an apocalyptic number.

56142811 is a deficient number, since it is larger than the sum of its proper divisors (2022389).

56142811 is a wasteful number, since it uses less digits than its factorization.

56142811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909.

The product of its digits is 1920, while the sum is 28.

The square root of 56142811 is about 7492.8506591283. The cubic root of 56142811 is about 382.9111838357.

Adding to 56142811 its reverse (11824165), we get a palindrome (67966976).

It can be divided in two parts, 56142 and 811, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 56142811 in words is "fifty-six million, one hundred forty-two thousand, eight hundred eleven".