55440312400103 has 4 divisors (see below), whose sum is σ = 55948939119480. Its totient is φ = 54931685680728.

The previous prime is 55440312400087. The next prime is 55440312400127. The reversal of 55440312400103 is 30100421304455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55440312400103 - 2⁴ = 55440312400087 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 55440312400103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55440312409103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254313359525 + ... + 254313359742.

It is an arithmetic number, because the mean of its divisors is an integer number (13987234779870).

Almost surely, 2^{55440312400103} is an apocalyptic number.

55440312400103 is a deficient number, since it is larger than the sum of its proper divisors (508626719377).

55440312400103 is a wasteful number, since it uses less digits than its factorization.

55440312400103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508626719376.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 55440312400103 its reverse (30100421304455), we get a palindrome (85540733704558).

The spelling of 55440312400103 in words is "fifty-five trillion, four hundred forty billion, three hundred twelve million, four hundred thousand, one hundred three".