55444455 has 48 divisors (see below), whose sum is σ = 105973920. Its totient is φ = 26592000.

The previous prime is 55444439. The next prime is 55444457.

55444455 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55444455 - 2⁴ = 55444439 is a prime.

It is a super-3 number, since 3×55444455³ (a number of 24 digits) contains 333 as substring.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55444457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49441 + ... + 50549.

It is an arithmetic number, because the mean of its divisors is an integer number (2207790).

Almost surely, 2^55444455 is an apocalyptic number.

55444455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55444455 is a deficient number, since it is larger than the sum of its proper divisors (50529465).

55444455 is a wasteful number, since it uses less digits than its factorization.

55444455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232 (or 1229 counting only the distinct ones).

The product of its digits is 160000, while the sum is 36.

The square root of 55444455 is about 7446.1033433602. The cubic root of 55444455 is about 381.3168876641.

It can be divided in two parts, 5544 and 4455, that added together give a palindrome (9999).

The spelling of 55444455 in words is "fifty-five million, four hundred forty-four thousand, four hundred fifty-five".