56504213 has 2 divisors, whose sum is σ = 56504214. Its totient is φ = 56504212.

The previous prime is 56504179. The next prime is 56504219. The reversal of 56504213 is 31240565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51868804 + 4635409 = 7202^2 + 2153^2 .

It is a cyclic number.

It is not a de Polignac number, because 56504213 - 2¹⁶ = 56438677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56504219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28252106 + 28252107.

It is an arithmetic number, because the mean of its divisors is an integer number (28252107).

Almost surely, 2^56504213 is an apocalyptic number.

It is an amenable number.

56504213 is a deficient number, since it is larger than the sum of its proper divisors (1).

56504213 is an equidigital number, since it uses as much as digits as its factorization.

56504213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 56504213 is about 7516.9284285538. The cubic root of 56504213 is about 383.7310512771.

Adding to 56504213 its reverse (31240565), we get a palindrome (87744778).

The spelling of 56504213 in words is "fifty-six million, five hundred four thousand, two hundred thirteen".