55135271 has 2 divisors, whose sum is σ = 55135272. Its totient is φ = 55135270.

The previous prime is 55135253. The next prime is 55135279. The reversal of 55135271 is 17253155.

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-55135271 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 (55135279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27567635 + 27567636.

It is an arithmetic number, because the mean of its divisors is an integer number (27567636).

Almost surely, 2^55135271 is an apocalyptic number.

55135271 is a deficient number, since it is larger than the sum of its proper divisors (1).

55135271 is an equidigital number, since it uses as much as digits as its factorization.

55135271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5250, while the sum is 29.

The square root of 55135271 is about 7425.3128553617. The cubic root of 55135271 is about 380.6067660859.

The spelling of 55135271 in words is "fifty-five million, one hundred thirty-five thousand, two hundred seventy-one".