55342271 has 2 divisors, whose sum is σ = 55342272. Its totient is φ = 55342270.

The previous prime is 55342267. The next prime is 55342279. The reversal of 55342271 is 17224355.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55342271 - 2² = 55342267 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55342279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27671135 + 27671136.

It is an arithmetic number, because the mean of its divisors is an integer number (27671136).

Almost surely, 2^55342271 is an apocalyptic number.

55342271 is a deficient number, since it is larger than the sum of its proper divisors (1).

55342271 is an equidigital number, since it uses as much as digits as its factorization.

55342271 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 55342271 is about 7439.2386035131. The cubic root of 55342271 is about 381.0824882306.

It can be divided in two parts, 553 and 42271, that added together give a palindrome (42824).

The spelling of 55342271 in words is "fifty-five million, three hundred forty-two thousand, two hundred seventy-one".