55143853 has 2 divisors, whose sum is σ = 55143854. Its totient is φ = 55143852.

The previous prime is 55143839. The next prime is 55143859. The reversal of 55143853 is 35834155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54730404 + 413449 = 7398^2 + 643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55143853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55143859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27571926 + 27571927.

It is an arithmetic number, because the mean of its divisors is an integer number (27571927).

Almost surely, 2^55143853 is an apocalyptic number.

It is an amenable number.

55143853 is a deficient number, since it is larger than the sum of its proper divisors (1).

55143853 is an equidigital number, since it uses as much as digits as its factorization.

55143853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 34.

The square root of 55143853 is about 7425.8907209843. The cubic root of 55143853 is about 380.6265126580.

The spelling of 55143853 in words is "fifty-five million, one hundred forty-three thousand, eight hundred fifty-three".