55444999 has 2 divisors, whose sum is σ = 55445000. Its totient is φ = 55444998.

The previous prime is 55444967. The next prime is 55445009. The reversal of 55444999 is 99944455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55444999 - 2⁵ = 55444967 is a prime.

It is a super-2 number, since 2×55444999² = 6148295828220002, which contains 22 as substring.

It is a Chen prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55444199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27722499 + 27722500.

It is an arithmetic number, because the mean of its divisors is an integer number (27722500).

Almost surely, 2^55444999 is an apocalyptic number.

55444999 is a deficient number, since it is larger than the sum of its proper divisors (1).

55444999 is an equidigital number, since it uses as much as digits as its factorization.

55444999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 49.

The square root of 55444999 is about 7446.1398724440. The cubic root of 55444999 is about 381.3181347724.

The spelling of 55444999 in words is "fifty-five million, four hundred forty-four thousand, nine hundred ninety-nine".