55004857 has 2 divisors, whose sum is σ = 55004858. Its totient is φ = 55004856.

The previous prime is 55004849. The next prime is 55004879. The reversal of 55004857 is 75840055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30294016 + 24710841 = 5504^2 + 4971^2 .

It is a cyclic number.

It is not a de Polignac number, because 55004857 - 2³ = 55004849 is a prime.

It is not a weakly prime, because it can be changed into another prime (55004827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502428 + 27502429.

It is an arithmetic number, because the mean of its divisors is an integer number (27502429).

Almost surely, 2^55004857 is an apocalyptic number.

It is an amenable number.

55004857 is a deficient number, since it is larger than the sum of its proper divisors (1).

55004857 is an equidigital number, since it uses as much as digits as its factorization.

55004857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 55004857 is about 7416.5259387398. The cubic root of 55004857 is about 380.3064402558.

The spelling of 55004857 in words is "fifty-five million, four thousand, eight hundred fifty-seven".