55189571 has 2 divisors, whose sum is σ = 55189572. Its totient is φ = 55189570.

The previous prime is 55189559. The next prime is 55189573. The reversal of 55189571 is 17598155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55189571 - 2¹⁴ = 55173187 is a prime.

Together with 55189573, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55189573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27594785 + 27594786.

It is an arithmetic number, because the mean of its divisors is an integer number (27594786).

Almost surely, 2^55189571 is an apocalyptic number.

55189571 is a deficient number, since it is larger than the sum of its proper divisors (1).

55189571 is an equidigital number, since it uses as much as digits as its factorization.

55189571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 41.

The square root of 55189571 is about 7428.9683671422. The cubic root of 55189571 is about 380.7316720134.

The spelling of 55189571 in words is "fifty-five million, one hundred eighty-nine thousand, five hundred seventy-one".