2643100553 has 4 divisors (see below), whose sum is σ = 2652121668. Its totient is φ = 2634079440.

The previous prime is 2643100549. The next prime is 2643100597. The reversal of 2643100553 is 3550013462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2004173824 + 638926729 = 44768^2 + 25277^2 .

It is a cyclic number.

It is not a de Polignac number, because 2643100553 - 2² = 2643100549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643100543) 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, 4510118 + ... + 4510703.

It is an arithmetic number, because the mean of its divisors is an integer number (663030417).

Almost surely, 2^2643100553 is an apocalyptic number.

It is an amenable number.

2643100553 is a deficient number, since it is larger than the sum of its proper divisors (9021115).

2643100553 is an equidigital number, since it uses as much as digits as its factorization.

2643100553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021114.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 2643100553 is about 51411.0936763652. The cubic root of 2643100553 is about 1382.6254982992.

The spelling of 2643100553 in words is "two billion, six hundred forty-three million, one hundred thousand, five hundred fifty-three".