55993963 has 2 divisors, whose sum is σ = 55993964. Its totient is φ = 55993962.

The previous prime is 55993961. The next prime is 55993981. The reversal of 55993963 is 36939955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55993963 - 2¹ = 55993961 is a prime.

Together with 55993961, it forms a pair of twin primes.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (55993961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27996981 + 27996982.

It is an arithmetic number, because the mean of its divisors is an integer number (27996982).

Almost surely, 2^55993963 is an apocalyptic number.

55993963 is a deficient number, since it is larger than the sum of its proper divisors (1).

55993963 is an equidigital number, since it uses as much as digits as its factorization.

55993963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 984150, while the sum is 49.

The square root of 55993963 is about 7482.9113986469. The cubic root of 55993963 is about 382.5724880062.

The spelling of 55993963 in words is "fifty-five million, nine hundred ninety-three thousand, nine hundred sixty-three".