55867319 has 2 divisors, whose sum is σ = 55867320. Its totient is φ = 55867318.

The previous prime is 55867291. The next prime is 55867327. The reversal of 55867319 is 91376855.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55867319 is a prime.

It is a super-2 number, since 2×55867319² = 6242314664495522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55867319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55867519) 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, 27933659 + 27933660.

It is an arithmetic number, because the mean of its divisors is an integer number (27933660).

Almost surely, 2^55867319 is an apocalyptic number.

55867319 is a deficient number, since it is larger than the sum of its proper divisors (1).

55867319 is an equidigital number, since it uses as much as digits as its factorization.

55867319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 55867319 is about 7474.4443940670. Note that the first 3 decimals coincide. The cubic root of 55867319 is about 382.2838432959.

The spelling of 55867319 in words is "fifty-five million, eight hundred sixty-seven thousand, three hundred nineteen".