56803111 has 2 divisors, whose sum is σ = 56803112. Its totient is φ = 56803110.

The previous prime is 56803079. The next prime is 56803127. The reversal of 56803111 is 11130865.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56803111 - 2⁵ = 56803079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56803211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28401555 + 28401556.

It is an arithmetic number, because the mean of its divisors is an integer number (28401556).

Almost surely, 2^56803111 is an apocalyptic number.

56803111 is a deficient number, since it is larger than the sum of its proper divisors (1).

56803111 is an equidigital number, since it uses as much as digits as its factorization.

56803111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 56803111 is about 7536.7838631607. The cubic root of 56803111 is about 384.4064864241.

Adding to 56803111 its reverse (11130865), we get a palindrome (67933976).

The spelling of 56803111 in words is "fifty-six million, eight hundred three thousand, one hundred eleven".