56118133 has 2 divisors, whose sum is σ = 56118134. Its totient is φ = 56118132.

The previous prime is 56118131. The next prime is 56118143. The reversal of 56118133 is 33181165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53319204 + 2798929 = 7302^2 + 1673^2 .

It is a cyclic number.

It is not a de Polignac number, because 56118133 - 2¹ = 56118131 is a prime.

Together with 56118131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56118131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28059066 + 28059067.

It is an arithmetic number, because the mean of its divisors is an integer number (28059067).

Almost surely, 2^56118133 is an apocalyptic number.

It is an amenable number.

56118133 is a deficient number, since it is larger than the sum of its proper divisors (1).

56118133 is an equidigital number, since it uses as much as digits as its factorization.

56118133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 56118133 is about 7491.2037083502. The cubic root of 56118133 is about 382.8550717714.

Adding to 56118133 its reverse (33181165), we get a palindrome (89299298).

The spelling of 56118133 in words is "fifty-six million, one hundred eighteen thousand, one hundred thirty-three".