115073021 has 6 divisors (see below), whose sum is σ = 133860510. Its totient is φ = 98633976.

The previous prime is 115072981. The next prime is 115073029. The reversal of 115073021 is 120370511.

It can be written as a sum of positive squares in only one way, i.e., 113656921 + 1416100 = 10661^2 + 1190^2 .

It is not a de Polignac number, because 115073021 - 2¹⁴ = 115056637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 115072984 and 115073002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115073029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1174166 + ... + 1174263.

It is an arithmetic number, because the mean of its divisors is an integer number (22310085).

Almost surely, 2^115073021 is an apocalyptic number.

It is an amenable number.

115073021 is a deficient number, since it is larger than the sum of its proper divisors (18787489).

115073021 is an equidigital number, since it uses as much as digits as its factorization.

115073021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348443 (or 2348436 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 115073021 is about 10727.2093761612. The cubic root of 115073021 is about 486.3973180114.

The spelling of 115073021 in words is "one hundred fifteen million, seventy-three thousand, twenty-one".