55438369 has 8 divisors (see below), whose sum is σ = 63725760. Its totient is φ = 47242896.

The previous prime is 55438363. The next prime is 55438373. The reversal of 55438369 is 96383455.

55438369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55438369 - 2¹¹ = 55436321 is a prime.

It is a super-2 number, since 2×55438369² = 6146825514760322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55438363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21679 + ... + 24100.

It is an arithmetic number, because the mean of its divisors is an integer number (7965720).

Almost surely, 2^55438369 is an apocalyptic number.

It is an amenable number.

55438369 is a deficient number, since it is larger than the sum of its proper divisors (8287391).

55438369 is a wasteful number, since it uses less digits than its factorization.

55438369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45959.

The product of its digits is 388800, while the sum is 43.

The square root of 55438369 is about 7445.6946620178. The cubic root of 55438369 is about 381.3029350847.

The spelling of 55438369 in words is "fifty-five million, four hundred thirty-eight thousand, three hundred sixty-nine".