56152213 has 4 divisors (see below), whose sum is σ = 60471628. Its totient is φ = 51832800.

The previous prime is 56152211. The next prime is 56152237. The reversal of 56152213 is 31225165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16184529 + 39967684 = 4023^2 + 6322^2 .

It is a cyclic number.

It is not a de Polignac number, because 56152213 - 2¹ = 56152211 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 (56152211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2159688 + ... + 2159713.

It is an arithmetic number, because the mean of its divisors is an integer number (15117907).

Almost surely, 2^56152213 is an apocalyptic number.

It is an amenable number.

56152213 is a deficient number, since it is larger than the sum of its proper divisors (4319415).

56152213 is a wasteful number, since it uses less digits than its factorization.

56152213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319414.

The product of its digits is 1800, while the sum is 25.

The square root of 56152213 is about 7493.4780309280. The cubic root of 56152213 is about 382.9325574835.

Adding to 56152213 its reverse (31225165), we get a palindrome (87377378).

It can be divided in two parts, 56152 and 213, that added together give a palindrome (56365).

The spelling of 56152213 in words is "fifty-six million, one hundred fifty-two thousand, two hundred thirteen".