113052721 has 2 divisors, whose sum is σ = 113052722. Its totient is φ = 113052720.

The previous prime is 113052683. The next prime is 113052767. The reversal of 113052721 is 127250311.

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., 72590400 + 40462321 = 8520^2 + 6361^2 .

It is an emirp because it is prime and its reverse (127250311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113052721 - 2¹⁷ = 112921649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113052692 and 113052701.

It is not a weakly prime, because it can be changed into another prime (113052221) 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 as a sum of consecutive naturals, namely, 56526360 + 56526361.

It is an arithmetic number, because the mean of its divisors is an integer number (56526361).

Almost surely, 2^113052721 is an apocalyptic number.

It is an amenable number.

113052721 is a deficient number, since it is larger than the sum of its proper divisors (1).

113052721 is an equidigital number, since it uses as much as digits as its factorization.

113052721 is an odious number, because the sum of its binary digits is odd.

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

The square root of 113052721 is about 10632.6253108064. The cubic root of 113052721 is about 483.5339881364.

The spelling of 113052721 in words is "one hundred thirteen million, fifty-two thousand, seven hundred twenty-one".