56211213 has 8 divisors (see below), whose sum is σ = 75067776. Its totient is φ = 37414400.

The previous prime is 56211203. The next prime is 56211229. The reversal of 56211213 is 31211265.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56211213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56211213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56211203) 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, 12693 + ... + 16538.

It is an arithmetic number, because the mean of its divisors is an integer number (9383472).

Almost surely, 2^56211213 is an apocalyptic number.

It is an amenable number.

56211213 is a deficient number, since it is larger than the sum of its proper divisors (18856563).

56211213 is a wasteful number, since it uses less digits than its factorization.

56211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29875.

The product of its digits is 360, while the sum is 21.

The square root of 56211213 is about 7497.4137540888. The cubic root of 56211213 is about 383.0666282610.

Adding to 56211213 its reverse (31211265), we get a palindrome (87422478).

The spelling of 56211213 in words is "fifty-six million, two hundred eleven thousand, two hundred thirteen".