52711721 has 4 divisors (see below), whose sum is σ = 53605200. Its totient is φ = 51818244.

The previous prime is 52711697. The next prime is 52711727. The reversal of 52711721 is 12711725.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52711721 - 2⁶ = 52711657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52711727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446651 + ... + 446768.

It is an arithmetic number, because the mean of its divisors is an integer number (13401300).

Almost surely, 2^52711721 is an apocalyptic number.

It is an amenable number.

52711721 is a deficient number, since it is larger than the sum of its proper divisors (893479).

52711721 is an equidigital number, since it uses as much as digits as its factorization.

52711721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893478.

The product of its digits is 980, while the sum is 26.

The square root of 52711721 is about 7260.2838098796. The cubic root of 52711721 is about 374.9462939384.

The spelling of 52711721 in words is "fifty-two million, seven hundred eleven thousand, seven hundred twenty-one".