55840271 has 2 divisors, whose sum is σ = 55840272. Its totient is φ = 55840270.

The previous prime is 55840261. The next prime is 55840321. The reversal of 55840271 is 17204855.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55840271 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 (55840201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27920135 + 27920136.

It is an arithmetic number, because the mean of its divisors is an integer number (27920136).

Almost surely, 2^55840271 is an apocalyptic number.

55840271 is a deficient number, since it is larger than the sum of its proper divisors (1).

55840271 is an equidigital number, since it uses as much as digits as its factorization.

55840271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 55840271 is about 7472.6348097575. The cubic root of 55840271 is about 382.2221394666. Note that the first 3 decimals are identical.

The spelling of 55840271 in words is "fifty-five million, eight hundred forty thousand, two hundred seventy-one".