55440115 has 8 divisors (see below), whose sum is σ = 68075568. Its totient is φ = 43320480.

The previous prime is 55440079. The next prime is 55440139. The reversal of 55440115 is 51104455.

It is a happy number.

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

It is not a de Polignac number, because 55440115 - 2⁹ = 55439603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55440115.

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 7 ways as a sum of consecutive naturals, for example, 128716 + ... + 129145.

It is an arithmetic number, because the mean of its divisors is an integer number (8509446).

Almost surely, 2^55440115 is an apocalyptic number.

55440115 is a deficient number, since it is larger than the sum of its proper divisors (12635453).

55440115 is a wasteful number, since it uses less digits than its factorization.

55440115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257909.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 55440115 is about 7445.8119100606. The cubic root of 55440115 is about 381.3069380159.

It can be divided in two parts, 55440 and 115, that added together give a palindrome (55555).

The spelling of 55440115 in words is "fifty-five million, four hundred forty thousand, one hundred fifteen".