55782127 has 2 divisors, whose sum is σ = 55782128. Its totient is φ = 55782126.

The previous prime is 55782071. The next prime is 55782143. The reversal of 55782127 is 72128755.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55782127 is a prime.

It is a super-3 number, since 3×55782127³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55782227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27891063 + 27891064.

It is an arithmetic number, because the mean of its divisors is an integer number (27891064).

Almost surely, 2^55782127 is an apocalyptic number.

55782127 is a deficient number, since it is larger than the sum of its proper divisors (1).

55782127 is an equidigital number, since it uses as much as digits as its factorization.

55782127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 37.

The square root of 55782127 is about 7468.7433347251. The cubic root of 55782127 is about 382.0894297350.

The spelling of 55782127 in words is "fifty-five million, seven hundred eighty-two thousand, one hundred twenty-seven".