115144521 has 4 divisors (see below), whose sum is σ = 153526032. Its totient is φ = 76763012.

The previous prime is 115144511. The next prime is 115144537. The reversal of 115144521 is 125441511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115144521 - 2¹⁵ = 115111753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115144491 and 115144500.

It is not an unprimeable number, because it can be changed into a prime (115144511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19190751 + ... + 19190756.

It is an arithmetic number, because the mean of its divisors is an integer number (38381508).

Almost surely, 2^115144521 is an apocalyptic number.

It is an amenable number.

115144521 is a deficient number, since it is larger than the sum of its proper divisors (38381511).

115144521 is an equidigital number, since it uses as much as digits as its factorization.

115144521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38381510.

The product of its digits is 800, while the sum is 24.

The square root of 115144521 is about 10730.5415054414. The cubic root of 115144521 is about 486.4980372692.

The spelling of 115144521 in words is "one hundred fifteen million, one hundred forty-four thousand, five hundred twenty-one".