55698427 has 2 divisors, whose sum is σ = 55698428. Its totient is φ = 55698426.

The previous prime is 55698361. The next prime is 55698451. The reversal of 55698427 is 72489655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55698427 - 2¹⁹ = 55174139 is a prime.

It is not a weakly prime, because it can be changed into another prime (55698497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27849213 + 27849214.

It is an arithmetic number, because the mean of its divisors is an integer number (27849214).

Almost surely, 2^55698427 is an apocalyptic number.

55698427 is a deficient number, since it is larger than the sum of its proper divisors (1).

55698427 is an equidigital number, since it uses as much as digits as its factorization.

55698427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 46.

The square root of 55698427 is about 7463.1378789354. The cubic root of 55698427 is about 381.8982281447.

The spelling of 55698427 in words is "fifty-five million, six hundred ninety-eight thousand, four hundred twenty-seven".