52721723 has 4 divisors (see below), whose sum is σ = 52736760. Its totient is φ = 52706688.

The previous prime is 52721719. The next prime is 52721737. The reversal of 52721723 is 32712725.

52721723 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 52721723 - 2² = 52721719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52721323) 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 3 ways as a sum of consecutive naturals, for example, 836 + ... + 10302.

It is an arithmetic number, because the mean of its divisors is an integer number (13184190).

Almost surely, 2^52721723 is an apocalyptic number.

52721723 is a deficient number, since it is larger than the sum of its proper divisors (15037).

52721723 is an equidigital number, since it uses as much as digits as its factorization.

52721723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15036.

The product of its digits is 5880, while the sum is 29.

The square root of 52721723 is about 7260.9725932550. The cubic root of 52721723 is about 374.9700076754.

The spelling of 52721723 in words is "fifty-two million, seven hundred twenty-one thousand, seven hundred twenty-three".