2653544621 has 16 divisors (see below), whose sum is σ = 3267110784. Its totient is φ = 2098730304.

The previous prime is 2653544609. The next prime is 2653544627. The reversal of 2653544621 is 1264453562.

2653544621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2653544621 - 2²² = 2649350317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2653544627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487511 + ... + 492923.

It is an arithmetic number, because the mean of its divisors is an integer number (204194424).

Almost surely, 2^2653544621 is an apocalyptic number.

It is an amenable number.

2653544621 is a deficient number, since it is larger than the sum of its proper divisors (613566163).

2653544621 is a wasteful number, since it uses less digits than its factorization.

2653544621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10820.

The product of its digits is 172800, while the sum is 38.

The square root of 2653544621 is about 51512.5676024793. The cubic root of 2653544621 is about 1384.4442279998. Note that the first 3 decimals are identical.

The spelling of 2653544621 in words is "two billion, six hundred fifty-three million, five hundred forty-four thousand, six hundred twenty-one".