55831663 has 2 divisors, whose sum is σ = 55831664. Its totient is φ = 55831662.

The previous prime is 55831561. The next prime is 55831669. The reversal of 55831663 is 36613855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55831663 - 2²¹ = 53734511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55831669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27915831 + 27915832.

It is an arithmetic number, because the mean of its divisors is an integer number (27915832).

Almost surely, 2^55831663 is an apocalyptic number.

55831663 is a deficient number, since it is larger than the sum of its proper divisors (1).

55831663 is an equidigital number, since it uses as much as digits as its factorization.

55831663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 55831663 is about 7472.0588193616. The cubic root of 55831663 is about 382.2024981027.

The spelling of 55831663 in words is "fifty-five million, eight hundred thirty-one thousand, six hundred sixty-three".