2053787721 has 8 divisors (see below), whose sum is σ = 2750447904. Its totient is φ = 1363159680.

The previous prime is 2053787713. The next prime is 2053787741. The reversal of 2053787721 is 1277873502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2053787721 - 2³ = 2053787713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2053787741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1507240 + ... + 1508601.

It is an arithmetic number, because the mean of its divisors is an integer number (343805988).

Almost surely, 2^2053787721 is an apocalyptic number.

It is an amenable number.

2053787721 is a deficient number, since it is larger than the sum of its proper divisors (696660183).

2053787721 is a wasteful number, since it uses less digits than its factorization.

2053787721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016071.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 2053787721 is about 45318.7347683053. The cubic root of 2053787721 is about 1271.1159969514.

The spelling of 2053787721 in words is "two billion, fifty-three million, seven hundred eighty-seven thousand, seven hundred twenty-one".