2143004553 has 32 divisors (see below), whose sum is σ = 3337171200. Its totient is φ = 1356524928.

The previous prime is 2143004543. The next prime is 2143004557. The reversal of 2143004553 is 3554003412.

It is not a de Polignac number, because 2143004553 - 2⁴ = 2143004537 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2143004557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72483 + ... + 97671.

It is an arithmetic number, because the mean of its divisors is an integer number (104286600).

Almost surely, 2^2143004553 is an apocalyptic number.

2143004553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2143004553 is a deficient number, since it is larger than the sum of its proper divisors (1194166647).

2143004553 is a wasteful number, since it uses less digits than its factorization.

2143004553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25358 (or 25352 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2143004553 is about 46292.5971727662. The cubic root of 2143004553 is about 1289.2615514026.

Adding to 2143004553 its reverse (3554003412), we get a palindrome (5697007965).

The spelling of 2143004553 in words is "two billion, one hundred forty-three million, four thousand, five hundred fifty-three".