55389853 has 2 divisors, whose sum is σ = 55389854. Its totient is φ = 55389852.

The previous prime is 55389799. The next prime is 55389931. The reversal of 55389853 is 35898355.

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., 48191364 + 7198489 = 6942^2 + 2683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55389853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55389953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27694926 + 27694927.

It is an arithmetic number, because the mean of its divisors is an integer number (27694927).

Almost surely, 2^55389853 is an apocalyptic number.

It is an amenable number.

55389853 is a deficient number, since it is larger than the sum of its proper divisors (1).

55389853 is an equidigital number, since it uses as much as digits as its factorization.

55389853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 46.

The square root of 55389853 is about 7442.4359587436. The cubic root of 55389853 is about 381.1916722378.

The spelling of 55389853 in words is "fifty-five million, three hundred eighty-nine thousand, eight hundred fifty-three".