55323013 has 2 divisors, whose sum is σ = 55323014. Its totient is φ = 55323012.

The previous prime is 55323011. The next prime is 55323017. The reversal of 55323013 is 31032355.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52388644 + 2934369 = 7238^2 + 1713^2 .

It is a cyclic number.

It is not a de Polignac number, because 55323013 - 2¹ = 55323011 is a prime.

Together with 55323011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55323011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27661506 + 27661507.

It is an arithmetic number, because the mean of its divisors is an integer number (27661507).

Almost surely, 2^55323013 is an apocalyptic number.

It is an amenable number.

55323013 is a deficient number, since it is larger than the sum of its proper divisors (1).

55323013 is an equidigital number, since it uses as much as digits as its factorization.

55323013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 55323013 is about 7437.9441379994. The cubic root of 55323013 is about 381.0382800822.

Adding to 55323013 its reverse (31032355), we get a palindrome (86355368).

The spelling of 55323013 in words is "fifty-five million, three hundred twenty-three thousand, thirteen".