55038839523 has 4 divisors (see below), whose sum is σ = 73385119368. Its totient is φ = 36692559680.

The previous prime is 55038839519. The next prime is 55038839587. The reversal of 55038839523 is 32593883055.

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 55038839523 - 2² = 55038839519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55038838523) 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, 9173139918 + ... + 9173139923.

It is an arithmetic number, because the mean of its divisors is an integer number (18346279842).

Almost surely, 2^55038839523 is an apocalyptic number.

55038839523 is a deficient number, since it is larger than the sum of its proper divisors (18346279845).

55038839523 is a wasteful number, since it uses less digits than its factorization.

55038839523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18346279844.

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 55038839523 in words is "fifty-five billion, thirty-eight million, eight hundred thirty-nine thousand, five hundred twenty-three".