11054551521 has 16 divisors (see below), whose sum is σ = 15929706240. Its totient is φ = 6778584960.

The previous prime is 11054551511. The next prime is 11054551523. The reversal of 11054551521 is 12515545011.

It is not a de Polignac number, because 11054551521 - 2⁹ = 11054551009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11054551523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493401 + ... + 515318.

It is an arithmetic number, because the mean of its divisors is an integer number (995606640).

Almost surely, 2^11054551521 is an apocalyptic number.

It is an amenable number.

11054551521 is a deficient number, since it is larger than the sum of its proper divisors (4875154719).

11054551521 is a wasteful number, since it uses less digits than its factorization.

11054551521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009016.

The product of its (nonzero) digits is 5000, while the sum is 30.

The spelling of 11054551521 in words is "eleven billion, fifty-four million, five hundred fifty-one thousand, five hundred twenty-one".