56438213 has 8 divisors (see below), whose sum is σ = 61184256. Its totient is φ = 51750000.

The previous prime is 56438201. The next prime is 56438219. The reversal of 56438213 is 31283465.

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 56438213 - 2⁶ = 56438149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56438213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56438219) 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, 12413 + ... + 16338.

It is an arithmetic number, because the mean of its divisors is an integer number (7648032).

Almost surely, 2^56438213 is an apocalyptic number.

It is an amenable number.

56438213 is a deficient number, since it is larger than the sum of its proper divisors (4746043).

56438213 is a wasteful number, since it uses less digits than its factorization.

56438213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28915.

The product of its digits is 17280, while the sum is 32.

The square root of 56438213 is about 7512.5370548171. The cubic root of 56438213 is about 383.5815868080.

The spelling of 56438213 in words is "fifty-six million, four hundred thirty-eight thousand, two hundred thirteen".