55271423 has 2 divisors, whose sum is σ = 55271424. Its totient is φ = 55271422.

The previous prime is 55271413. The next prime is 55271431. The reversal of 55271423 is 32417255.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55271423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55271413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27635711 + 27635712.

It is an arithmetic number, because the mean of its divisors is an integer number (27635712).

Almost surely, 2^55271423 is an apocalyptic number.

55271423 is a deficient number, since it is larger than the sum of its proper divisors (1).

55271423 is an equidigital number, since it uses as much as digits as its factorization.

55271423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 29.

The square root of 55271423 is about 7434.4753009207. The cubic root of 55271423 is about 380.9198008851.

Adding to 55271423 its reverse (32417255), we get a palindrome (87688678).

The spelling of 55271423 in words is "fifty-five million, two hundred seventy-one thousand, four hundred twenty-three".