55004437 has 2 divisors, whose sum is σ = 55004438. Its totient is φ = 55004436.

The previous prime is 55004419. The next prime is 55004441. The reversal of 55004437 is 73440055.

55004437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51466276 + 3538161 = 7174^2 + 1881^2 .

It is a cyclic number.

It is not a de Polignac number, because 55004437 - 2⁷ = 55004309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55034437) 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, 27502218 + 27502219.

It is an arithmetic number, because the mean of its divisors is an integer number (27502219).

Almost surely, 2^55004437 is an apocalyptic number.

It is an amenable number.

55004437 is a deficient number, since it is larger than the sum of its proper divisors (1).

55004437 is an equidigital number, since it uses as much as digits as its factorization.

55004437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 55004437 is about 7416.4976235417. The cubic root of 55004437 is about 380.3054722860.

The spelling of 55004437 in words is "fifty-five million, four thousand, four hundred thirty-seven".