115072521 has 8 divisors (see below), whose sum is σ = 154028064. Its totient is φ = 76416000.

The previous prime is 115072511. The next prime is 115072537. The reversal of 115072521 is 125270511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115072521 - 2⁶ = 115072457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115072491 and 115072500.

It is not an unprimeable number, because it can be changed into a prime (115072501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73855 + ... + 75396.

It is an arithmetic number, because the mean of its divisors is an integer number (19253508).

Almost surely, 2^115072521 is an apocalyptic number.

It is an amenable number.

115072521 is a deficient number, since it is larger than the sum of its proper divisors (38955543).

115072521 is a wasteful number, since it uses less digits than its factorization.

115072521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149511.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 115072521 is about 10727.1860709135. The cubic root of 115072521 is about 486.3966135340.

It can be divided in two parts, 11507 and 2521, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 115072521 in words is "one hundred fifteen million, seventy-two thousand, five hundred twenty-one".