55444869 has 12 divisors (see below), whose sum is σ = 84302400. Its totient is φ = 35017704.

The previous prime is 55444867. The next prime is 55444891. The reversal of 55444869 is 96844455.

55444869 is a `hidden beast` number, since 5 + 544 + 48 + 69 = 666.

It is not a de Polignac number, because 55444869 - 2¹ = 55444867 is a prime.

It is a super-2 number, since 2×55444869² = 6148266996854322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55444867) 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 in 11 ways as a sum of consecutive naturals, for example, 161949 + ... + 162290.

It is an arithmetic number, because the mean of its divisors is an integer number (7025200).

Almost surely, 2^55444869 is an apocalyptic number.

It is an amenable number.

55444869 is a deficient number, since it is larger than the sum of its proper divisors (28857531).

55444869 is a wasteful number, since it uses less digits than its factorization.

55444869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324264 (or 324261 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 55444869 is about 7446.1311430836. The cubic root of 55444869 is about 381.3178367509.

The spelling of 55444869 in words is "fifty-five million, four hundred forty-four thousand, eight hundred sixty-nine".