55102427 has 2 divisors, whose sum is σ = 55102428. Its totient is φ = 55102426.

The previous prime is 55102417. The next prime is 55102429. The reversal of 55102427 is 72420155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55102427 - 2²⁰ = 54053851 is a prime.

It is a super-2 number, since 2×55102427² = 6072554922580658, which contains 22 as substring.

Together with 55102429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 55102396 and 55102405.

It is not a weakly prime, because it can be changed into another prime (55102429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27551213 + 27551214.

It is an arithmetic number, because the mean of its divisors is an integer number (27551214).

Almost surely, 2^55102427 is an apocalyptic number.

55102427 is a deficient number, since it is larger than the sum of its proper divisors (1).

55102427 is an equidigital number, since it uses as much as digits as its factorization.

55102427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 55102427 is about 7423.1009019142. The cubic root of 55102427 is about 380.5311754436.

The spelling of 55102427 in words is "fifty-five million, one hundred two thousand, four hundred twenty-seven".