52721113 has 2 divisors, whose sum is σ = 52721114. Its totient is φ = 52721112.

The previous prime is 52721107. The next prime is 52721287. The reversal of 52721113 is 31112725.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51151104 + 1570009 = 7152^2 + 1253^2 .

It is a cyclic number.

It is not a de Polignac number, because 52721113 - 2⁹ = 52720601 is a prime.

It is not a weakly prime, because it can be changed into another prime (52731113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26360556 + 26360557.

It is an arithmetic number, because the mean of its divisors is an integer number (26360557).

Almost surely, 2^52721113 is an apocalyptic number.

It is an amenable number.

52721113 is a deficient number, since it is larger than the sum of its proper divisors (1).

52721113 is an equidigital number, since it uses as much as digits as its factorization.

52721113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 22.

The square root of 52721113 is about 7260.9305877415. The cubic root of 52721113 is about 374.9685615125.

Adding to 52721113 its reverse (31112725), we get a palindrome (83833838).

The spelling of 52721113 in words is "fifty-two million, seven hundred twenty-one thousand, one hundred thirteen".