56072213 has 2 divisors, whose sum is σ = 56072214. Its totient is φ = 56072212.

The previous prime is 56072209. The next prime is 56072221. The reversal of 56072213 is 31227065.

56072213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50951044 + 5121169 = 7138^2 + 2263^2 .

It is a cyclic number.

It is not a de Polignac number, because 56072213 - 2² = 56072209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56072293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28036106 + 28036107.

It is an arithmetic number, because the mean of its divisors is an integer number (28036107).

Almost surely, 2^56072213 is an apocalyptic number.

It is an amenable number.

56072213 is a deficient number, since it is larger than the sum of its proper divisors (1).

56072213 is an equidigital number, since it uses as much as digits as its factorization.

56072213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 56072213 is about 7488.1381531059. The cubic root of 56072213 is about 382.7506165124.

Adding to 56072213 its reverse (31227065), we get a palindrome (87299278).

The spelling of 56072213 in words is "fifty-six million, seventy-two thousand, two hundred thirteen".