55603439975 has 12 divisors (see below), whose sum is σ = 70811733384. Its totient is φ = 43280514720.

The previous prime is 55603439953. The next prime is 55603439981. The reversal of 55603439975 is 57993430655.

It is a happy number.

It is not a de Polignac number, because 55603439975 - 2⁸ = 55603439719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55603439975.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30054989 + ... + 30056838.

It is an arithmetic number, because the mean of its divisors is an integer number (5900977782).

Almost surely, 2^55603439975 is an apocalyptic number.

55603439975 is a deficient number, since it is larger than the sum of its proper divisors (15208293409).

55603439975 is a wasteful number, since it uses less digits than its factorization.

55603439975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60111874 (or 60111869 counting only the distinct ones).

The product of its (nonzero) digits is 15309000, while the sum is 56.

The spelling of 55603439975 in words is "fifty-five billion, six hundred three million, four hundred thirty-nine thousand, nine hundred seventy-five".