115721033 has 2 divisors, whose sum is σ = 115721034. Its totient is φ = 115721032.

The previous prime is 115721009. The next prime is 115721069. The reversal of 115721033 is 330127511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72726784 + 42994249 = 8528^2 + 6557^2 .

It is a cyclic number.

It is not a de Polignac number, because 115721033 - 2¹⁶ = 115655497 is a prime.

It is not a weakly prime, because it can be changed into another prime (115721933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57860516 + 57860517.

It is an arithmetic number, because the mean of its divisors is an integer number (57860517).

Almost surely, 2^115721033 is an apocalyptic number.

It is an amenable number.

115721033 is a deficient number, since it is larger than the sum of its proper divisors (1).

115721033 is an equidigital number, since it uses as much as digits as its factorization.

115721033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 115721033 is about 10757.3711007848. The cubic root of 115721033 is about 487.3086277560.

Adding to 115721033 its reverse (330127511), we get a palindrome (445848544).

The spelling of 115721033 in words is "one hundred fifteen million, seven hundred twenty-one thousand, thirty-three".