2111144553 has 20 divisors (see below), whose sum is σ = 3604212480. Its totient is φ = 1206367992.

The previous prime is 2111144537. The next prime is 2111144573. The reversal of 2111144553 is 3554411112.

2111144553 is a `hidden beast` number, since 211 + 1 + 1 + 445 + 5 + 3 = 666.

It is not a de Polignac number, because 2111144553 - 2⁴ = 2111144537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2111144533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1861113 + ... + 1862246.

It is an arithmetic number, because the mean of its divisors is an integer number (180210624).

Almost surely, 2^2111144553 is an apocalyptic number.

It is an amenable number.

2111144553 is a deficient number, since it is larger than the sum of its proper divisors (1493067927).

2111144553 is an equidigital number, since it uses as much as digits as its factorization.

2111144553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723378 (or 3723369 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 2111144553 is about 45947.1930916351. The cubic root of 2111144553 is about 1282.8404841344.

Adding to 2111144553 its reverse (3554411112), we get a palindrome (5665555665).

The spelling of 2111144553 in words is "two billion, one hundred eleven million, one hundred forty-four thousand, five hundred fifty-three".