56005213 has 12 divisors (see below), whose sum is σ = 61860960. Its totient is φ = 50664680.

The previous prime is 56005199. The next prime is 56005231. The reversal of 56005213 is 31250065.

It is a happy number.

It is not a de Polignac number, because 56005213 - 2¹⁷ = 55874141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56005273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26448 + ... + 28486.

It is an arithmetic number, because the mean of its divisors is an integer number (5155080).

Almost surely, 2^56005213 is an apocalyptic number.

It is an amenable number.

56005213 is a deficient number, since it is larger than the sum of its proper divisors (5855747).

56005213 is a wasteful number, since it uses less digits than its factorization.

56005213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 56005213 is about 7483.6630736558. The cubic root of 56005213 is about 382.5981077460.

Adding to 56005213 its reverse (31250065), we get a palindrome (87255278).

It can be divided in two parts, 560052 and 13, that added together give a palindrome (560065).

The spelling of 56005213 in words is "fifty-six million, five thousand, two hundred thirteen".