55937813 has 2 divisors, whose sum is σ = 55937814. Its totient is φ = 55937812.

The previous prime is 55937809. The next prime is 55937873. The reversal of 55937813 is 31873955.

It is a happy number.

55937813 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., 48413764 + 7524049 = 6958^2 + 2743^2 .

It is a cyclic number.

It is not a de Polignac number, because 55937813 - 2² = 55937809 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55937873) 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, 27968906 + 27968907.

It is an arithmetic number, because the mean of its divisors is an integer number (27968907).

Almost surely, 2^55937813 is an apocalyptic number.

It is an amenable number.

55937813 is a deficient number, since it is larger than the sum of its proper divisors (1).

55937813 is an equidigital number, since it uses as much as digits as its factorization.

55937813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 55937813 is about 7479.1585756688. The cubic root of 55937813 is about 382.4445657059. Note that the first 3 decimals are identical.

The spelling of 55937813 in words is "fifty-five million, nine hundred thirty-seven thousand, eight hundred thirteen".