2643512554 has 4 divisors (see below), whose sum is σ = 3965268834. Its totient is φ = 1321756276.

The previous prime is 2643512549. The next prime is 2643512561. The reversal of 2643512554 is 4552153462.

2643512554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 2398746529 + 244766025 = 48977^2 + 15645^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660878137 + ... + 660878140.

Almost surely, 2^2643512554 is an apocalyptic number.

2643512554 is a deficient number, since it is larger than the sum of its proper divisors (1321756280).

2643512554 is a wasteful number, since it uses less digits than its factorization.

2643512554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321756279.

The product of its digits is 144000, while the sum is 37.

The square root of 2643512554 is about 51415.1004472422. The cubic root of 2643512554 is about 1382.6973348261.

The spelling of 2643512554 in words is "two billion, six hundred forty-three million, five hundred twelve thousand, five hundred fifty-four".