2721523857 has 16 divisors (see below), whose sum is σ = 3974066880. Its totient is φ = 1646396352.

The previous prime is 2721523817. The next prime is 2721523867. The reversal of 2721523857 is 7583251272.

It is not a de Polignac number, because 2721523857 - 2¹⁰ = 2721522833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2721523807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589078 + ... + 593679.

It is an arithmetic number, because the mean of its divisors is an integer number (248379180).

Almost surely, 2^2721523857 is an apocalyptic number.

It is an amenable number.

2721523857 is a deficient number, since it is larger than the sum of its proper divisors (1252543023).

2721523857 is a wasteful number, since it uses less digits than its factorization.

2721523857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182832.

The product of its digits is 235200, while the sum is 42.

The square root of 2721523857 is about 52168.2265080959. The cubic root of 2721523857 is about 1396.1670423028.

The spelling of 2721523857 in words is "two billion, seven hundred twenty-one million, five hundred twenty-three thousand, eight hundred fifty-seven".