56511133 has 8 divisors (see below), whose sum is σ = 65250752. Its totient is φ = 47938176.

The previous prime is 56511113. The next prime is 56511139. The reversal of 56511133 is 33111565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56511133 - 2⁹ = 56510621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56511098 and 56511107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56511139) 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, 40935 + ... + 42292.

It is an arithmetic number, because the mean of its divisors is an integer number (8156344).

Almost surely, 2^56511133 is an apocalyptic number.

It is an amenable number.

56511133 is a deficient number, since it is larger than the sum of its proper divisors (8739619).

56511133 is an equidigital number, since it uses as much as digits as its factorization.

56511133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83331.

The product of its digits is 1350, while the sum is 25.

The square root of 56511133 is about 7517.3887088536. The cubic root of 56511133 is about 383.7467156576.

Adding to 56511133 its reverse (33111565), we get a palindrome (89622698).

It can be divided in two parts, 56511 and 133, that added together give a square (56644 = 238²).

The spelling of 56511133 in words is "fifty-six million, five hundred eleven thousand, one hundred thirty-three".