54989863 has 2 divisors, whose sum is σ = 54989864. Its totient is φ = 54989862.

The previous prime is 54989861. The next prime is 54989903. The reversal of 54989863 is 36898945.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54989863 - 2¹ = 54989861 is a prime.

Together with 54989861, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 54989863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54989861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27494931 + 27494932.

It is an arithmetic number, because the mean of its divisors is an integer number (27494932).

Almost surely, 2^54989863 is an apocalyptic number.

54989863 is a deficient number, since it is larger than the sum of its proper divisors (1).

54989863 is an equidigital number, since it uses as much as digits as its factorization.

54989863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 52.

The square root of 54989863 is about 7415.5150192013. The cubic root of 54989863 is about 380.2718806836.

The spelling of 54989863 in words is "fifty-four million, nine hundred eighty-nine thousand, eight hundred sixty-three".