55044413 has 2 divisors, whose sum is σ = 55044414. Its totient is φ = 55044412.

The previous prime is 55044403. The next prime is 55044433. The reversal of 55044413 is 31444055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55026724 + 17689 = 7418^2 + 133^2 .

It is a cyclic number.

It is not a de Polignac number, because 55044413 - 2⁴ = 55044397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55044403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27522206 + 27522207.

It is an arithmetic number, because the mean of its divisors is an integer number (27522207).

Almost surely, 2^55044413 is an apocalyptic number.

It is an amenable number.

55044413 is a deficient number, since it is larger than the sum of its proper divisors (1).

55044413 is an equidigital number, since it uses as much as digits as its factorization.

55044413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 55044413 is about 7419.1922067028. The cubic root of 55044413 is about 380.3975824914.

Adding to 55044413 its reverse (31444055), we get a palindrome (86488468).

The spelling of 55044413 in words is "fifty-five million, forty-four thousand, four hundred thirteen".