55231783 has 2 divisors, whose sum is σ = 55231784. Its totient is φ = 55231782.

The previous prime is 55231751. The next prime is 55231811. The reversal of 55231783 is 38713255.

55231783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55231783 - 2⁵ = 55231751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55231483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27615891 + 27615892.

It is an arithmetic number, because the mean of its divisors is an integer number (27615892).

Almost surely, 2^55231783 is an apocalyptic number.

55231783 is a deficient number, since it is larger than the sum of its proper divisors (1).

55231783 is an equidigital number, since it uses as much as digits as its factorization.

55231783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

The square root of 55231783 is about 7431.8088646036. The cubic root of 55231783 is about 380.8287154062.

The spelling of 55231783 in words is "fifty-five million, two hundred thirty-one thousand, seven hundred eighty-three".