55002889 has 2 divisors, whose sum is σ = 55002890. Its totient is φ = 55002888.

The previous prime is 55002887. The next prime is 55002917. The reversal of 55002889 is 98820055.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42471289 + 12531600 = 6517^2 + 3540^2 .

It is a cyclic number.

It is not a de Polignac number, because 55002889 - 2¹ = 55002887 is a prime.

Together with 55002887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55002887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27501444 + 27501445.

It is an arithmetic number, because the mean of its divisors is an integer number (27501445).

Almost surely, 2^55002889 is an apocalyptic number.

It is an amenable number.

55002889 is a deficient number, since it is larger than the sum of its proper divisors (1).

55002889 is an equidigital number, since it uses as much as digits as its factorization.

55002889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 55002889 is about 7416.3932608782. The cubic root of 55002889 is about 380.3019045836.

The spelling of 55002889 in words is "fifty-five million, two thousand, eight hundred eighty-nine".