56215133 has 8 divisors (see below), whose sum is σ = 60607008. Its totient is φ = 51832944.

The previous prime is 56215123. The next prime is 56215163. The reversal of 56215133 is 33151265.

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 56215133 - 2⁶ = 56215069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56215123) 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, 13610 + ... + 17252.

It is an arithmetic number, because the mean of its divisors is an integer number (7575876).

Almost surely, 2^56215133 is an apocalyptic number.

It is an amenable number.

56215133 is a deficient number, since it is larger than the sum of its proper divisors (4391875).

56215133 is a wasteful number, since it uses less digits than its factorization.

56215133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843.

The product of its digits is 2700, while the sum is 26.

The square root of 56215133 is about 7497.6751730120. The cubic root of 56215133 is about 383.0755326900.

Adding to 56215133 its reverse (33151265), we get a palindrome (89366398).

The spelling of 56215133 in words is "fifty-six million, two hundred fifteen thousand, one hundred thirty-three".