55244069 has 2 divisors, whose sum is σ = 55244070. Its totient is φ = 55244068.

The previous prime is 55244047. The next prime is 55244081. The reversal of 55244069 is 96044255.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53949025 + 1295044 = 7345^2 + 1138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55244069 is a prime.

It is a super-2 number, since 2×55244069² = 6103814319353522, which contains 22 as substring.

It is a Sophie Germain 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 (55244099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27622034 + 27622035.

It is an arithmetic number, because the mean of its divisors is an integer number (27622035).

Almost surely, 2^55244069 is an apocalyptic number.

It is an amenable number.

55244069 is a deficient number, since it is larger than the sum of its proper divisors (1).

55244069 is an equidigital number, since it uses as much as digits as its factorization.

55244069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 55244069 is about 7432.6354007176. The cubic root of 55244069 is about 380.8569510491.

The spelling of 55244069 in words is "fifty-five million, two hundred forty-four thousand, sixty-nine".