11255055551 has 4 divisors (see below), whose sum is σ = 11258250192. Its totient is φ = 11251860912.

The previous prime is 11255055533. The next prime is 11255055563. The reversal of 11255055551 is 15555055211.

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-11255055551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11255055521) 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, 1592030 + ... + 1599083.

It is an arithmetic number, because the mean of its divisors is an integer number (2814562548).

Almost surely, 2^11255055551 is an apocalyptic number.

11255055551 is a deficient number, since it is larger than the sum of its proper divisors (3194641).

11255055551 is an equidigital number, since it uses as much as digits as its factorization.

11255055551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194640.

The product of its (nonzero) digits is 31250, while the sum is 35.

The spelling of 11255055551 in words is "eleven billion, two hundred fifty-five million, fifty-five thousand, five hundred fifty-one".