56162813 has 4 divisors (see below), whose sum is σ = 64186080. Its totient is φ = 48139548.

The previous prime is 56162801. The next prime is 56162819. The reversal of 56162813 is 31826165.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56162813 - 2⁴ = 56162797 is a prime.

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 56162813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56162819) 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, 4011623 + ... + 4011636.

It is an arithmetic number, because the mean of its divisors is an integer number (16046520).

Almost surely, 2^56162813 is an apocalyptic number.

It is an amenable number.

56162813 is a deficient number, since it is larger than the sum of its proper divisors (8023267).

56162813 is an equidigital number, since it uses as much as digits as its factorization.

56162813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023266.

The product of its digits is 8640, while the sum is 32.

The square root of 56162813 is about 7494.1852792682. The cubic root of 56162813 is about 382.9566516940.

Adding to 56162813 its reverse (31826165), we get a palindrome (87988978).

The spelling of 56162813 in words is "fifty-six million, one hundred sixty-two thousand, eight hundred thirteen".