55047271 has 2 divisors, whose sum is σ = 55047272. Its totient is φ = 55047270.

The previous prime is 55047269. The next prime is 55047281. The reversal of 55047271 is 17274055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55047271 - 2¹ = 55047269 is a prime.

Together with 55047269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55047221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27523635 + 27523636.

It is an arithmetic number, because the mean of its divisors is an integer number (27523636).

Almost surely, 2^55047271 is an apocalyptic number.

55047271 is a deficient number, since it is larger than the sum of its proper divisors (1).

55047271 is an equidigital number, since it uses as much as digits as its factorization.

55047271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 55047271 is about 7419.3848127726. The cubic root of 55047271 is about 380.4041660083.

The spelling of 55047271 in words is "fifty-five million, forty-seven thousand, two hundred seventy-one".