55257823 has 2 divisors, whose sum is σ = 55257824. Its totient is φ = 55257822.

The previous prime is 55257817. The next prime is 55257857. The reversal of 55257823 is 32875255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55257823 - 2¹⁷ = 55126751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55257023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628911 + 27628912.

It is an arithmetic number, because the mean of its divisors is an integer number (27628912).

Almost surely, 2^55257823 is an apocalyptic number.

55257823 is a deficient number, since it is larger than the sum of its proper divisors (1).

55257823 is an equidigital number, since it uses as much as digits as its factorization.

55257823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 37.

The square root of 55257823 is about 7433.5605869597. The cubic root of 55257823 is about 380.8885554785. Note that the first 3 decimals are identical.

The spelling of 55257823 in words is "fifty-five million, two hundred fifty-seven thousand, eight hundred twenty-three".