2554015521523 has 4 divisors (see below), whose sum is σ = 2568283764840. Its totient is φ = 2539747278208.

The previous prime is 2554015521511. The next prime is 2554015521593. The reversal of 2554015521523 is 3251255104552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2554015521523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2554015521593) 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, 7134121390 + ... + 7134121747.

It is an arithmetic number, because the mean of its divisors is an integer number (642070941210).

Almost surely, 2^{2554015521523} is an apocalyptic number.

2554015521523 is a deficient number, since it is larger than the sum of its proper divisors (14268243317).

2554015521523 is a wasteful number, since it uses less digits than its factorization.

2554015521523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14268243316.

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 2554015521523 in words is "two trillion, five hundred fifty-four billion, fifteen million, five hundred twenty-one thousand, five hundred twenty-three".