55257269 has 2 divisors, whose sum is σ = 55257270. Its totient is φ = 55257268.

The previous prime is 55257253. The next prime is 55257271. The reversal of 55257269 is 96275255.

55257269 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., 46922500 + 8334769 = 6850^2 + 2887^2 .

It is a cyclic number.

It is not a de Polignac number, because 55257269 - 2⁴ = 55257253 is a prime.

It is a super-2 number, since 2×55257269² = 6106731554676722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 55257271, it forms a pair of twin primes.

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 (55257229) 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, 27628634 + 27628635.

It is an arithmetic number, because the mean of its divisors is an integer number (27628635).

Almost surely, 2^55257269 is an apocalyptic number.

It is an amenable number.

55257269 is a deficient number, since it is larger than the sum of its proper divisors (1).

55257269 is an equidigital number, since it uses as much as digits as its factorization.

55257269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189000, while the sum is 41.

The square root of 55257269 is about 7433.5233234315. The cubic root of 55257269 is about 380.8872825790.

The spelling of 55257269 in words is "fifty-five million, two hundred fifty-seven thousand, two hundred sixty-nine".