55455455 has 16 divisors (see below), whose sum is σ = 73418400. Its totient is φ = 39874560.

The previous prime is 55455443. The next prime is 55455467.

55455455 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (55455443) and next prime (55455467).

It is not a de Polignac number, because 55455455 - 2⁸ = 55455199 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 770 + ... + 10559.

It is an arithmetic number, because the mean of its divisors is an integer number (4588650).

Almost surely, 2^55455455 is an apocalyptic number.

55455455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55455455 is a deficient number, since it is larger than the sum of its proper divisors (17962945).

55455455 is a wasteful number, since it uses less digits than its factorization.

55455455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11434.

The product of its digits is 250000, while the sum is 38.

The square root of 55455455 is about 7446.8419481012. The cubic root of 55455455 is about 381.3421033411.

It can be divided in two parts, 55 and 455455, that multiplied together give a square (25050025 = 5005²).

The spelling of 55455455 in words is "fifty-five million, four hundred fifty-five thousand, four hundred fifty-five".