55841213 has 2 divisors, whose sum is σ = 55841214. Its totient is φ = 55841212.

The previous prime is 55841189. The next prime is 55841231. The reversal of 55841213 is 31214855.

55841213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (55841231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52374169 + 3467044 = 7237^2 + 1862^2 .

It is a cyclic number.

It is not a de Polignac number, because 55841213 - 2¹⁴ = 55824829 is a prime.

It is a super-2 number, since 2×55841213² = 6236482138622738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55841273) 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, 27920606 + 27920607.

It is an arithmetic number, because the mean of its divisors is an integer number (27920607).

Almost surely, 2^55841213 is an apocalyptic number.

It is an amenable number.

55841213 is a deficient number, since it is larger than the sum of its proper divisors (1).

55841213 is an equidigital number, since it uses as much as digits as its factorization.

55841213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 55841213 is about 7472.6978394687. The cubic root of 55841213 is about 382.2242887592.

The spelling of 55841213 in words is "fifty-five million, eight hundred forty-one thousand, two hundred thirteen".