55644499 has 2 divisors, whose sum is σ = 55644500. Its totient is φ = 55644498.

The previous prime is 55644487. The next prime is 55644517. The reversal of 55644499 is 99444655.

55644499 is nontrivially palindromic in base 16.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55644499 - 2⁵ = 55644467 is a prime.

It is a super-2 number, since 2×55644499² = 6192620537922002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55644419) 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, 27822249 + 27822250.

It is an arithmetic number, because the mean of its divisors is an integer number (27822250).

Almost surely, 2^55644499 is an apocalyptic number.

55644499 is a deficient number, since it is larger than the sum of its proper divisors (1).

55644499 is an equidigital number, since it uses as much as digits as its factorization.

55644499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 46.

The square root of 55644499 is about 7459.5240464791. The cubic root of 55644499 is about 381.7749352671.

The spelling of 55644499 in words is "fifty-five million, six hundred forty-four thousand, four hundred ninety-nine".