55478383 has 2 divisors, whose sum is σ = 55478384. Its totient is φ = 55478382.

The previous prime is 55478351. The next prime is 55478389. The reversal of 55478383 is 38387455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55478383 - 2⁵ = 55478351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55478389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27739191 + 27739192.

It is an arithmetic number, because the mean of its divisors is an integer number (27739192).

Almost surely, 2^55478383 is an apocalyptic number.

55478383 is a deficient number, since it is larger than the sum of its proper divisors (1).

55478383 is an equidigital number, since it uses as much as digits as its factorization.

55478383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 43.

The square root of 55478383 is about 7448.3812335299. The cubic root of 55478383 is about 381.3946512647.

The spelling of 55478383 in words is "fifty-five million, four hundred seventy-eight thousand, three hundred eighty-three".