55993279 has 2 divisors, whose sum is σ = 55993280. Its totient is φ = 55993278.

The previous prime is 55993261. The next prime is 55993283. The reversal of 55993279 is 97239955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55993279 - 2¹¹ = 55991231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55993079) 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, 27996639 + 27996640.

It is an arithmetic number, because the mean of its divisors is an integer number (27996640).

Almost surely, 2^55993279 is an apocalyptic number.

55993279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55993279 is an equidigital number, since it uses as much as digits as its factorization.

55993279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 765450, while the sum is 49.

The square root of 55993279 is about 7482.8656943714. The cubic root of 55993279 is about 382.5709302154.

The spelling of 55993279 in words is "fifty-five million, nine hundred ninety-three thousand, two hundred seventy-nine".