55123459 has 2 divisors, whose sum is σ = 55123460. Its totient is φ = 55123458.

The previous prime is 55123441. The next prime is 55123493. The reversal of 55123459 is 95432155.

It is an a-pointer prime, because the next prime (55123493) can be obtained adding 55123459 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55123459 - 2⁷ = 55123331 is a prime.

It is equal to p_3289165 and since 55123459 and 3289165 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (55123429) 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, 27561729 + 27561730.

It is an arithmetic number, because the mean of its divisors is an integer number (27561730).

Almost surely, 2^55123459 is an apocalyptic number.

55123459 is a deficient number, since it is larger than the sum of its proper divisors (1).

55123459 is an equidigital number, since it uses as much as digits as its factorization.

55123459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 34.

The square root of 55123459 is about 7424.5174253954. The cubic root of 55123459 is about 380.5795841621.

The spelling of 55123459 in words is "fifty-five million, one hundred twenty-three thousand, four hundred fifty-nine".