55123203772253 has 4 divisors (see below), whose sum is σ = 56613020090460. Its totient is φ = 53633387454048.

The previous prime is 55123203772243. The next prime is 55123203772303. The reversal of 55123203772253 is 35227730232155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24799822323364 + 30323381448889 = 4979942^2 + 5506667^2 .

It is a cyclic number.

It is not a de Polignac number, because 55123203772253 - 2⁸ = 55123203771997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55123203772198 and 55123203772207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55123203772243) 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, 744908159048 + ... + 744908159121.

It is an arithmetic number, because the mean of its divisors is an integer number (14153255022615).

Almost surely, 2^{55123203772253} is an apocalyptic number.

It is an amenable number.

55123203772253 is a deficient number, since it is larger than the sum of its proper divisors (1489816318207).

55123203772253 is a wasteful number, since it uses less digits than its factorization.

55123203772253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489816318206.

The product of its (nonzero) digits is 2646000, while the sum is 47.

The spelling of 55123203772253 in words is "fifty-five trillion, one hundred twenty-three billion, two hundred three million, seven hundred seventy-two thousand, two hundred fifty-three".