115261537 has 4 divisors (see below), whose sum is σ = 118072836. Its totient is φ = 112450240.

The previous prime is 115261463. The next prime is 115261541. The reversal of 115261537 is 735162511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40335201 + 74926336 = 6351^2 + 8656^2 .

It is a cyclic number.

It is not a de Polignac number, because 115261537 - 2¹¹ = 115259489 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115261499 and 115261508.

It is not an unprimeable number, because it can be changed into a prime (115261567) 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 in 3 ways as a sum of consecutive naturals, for example, 1405588 + ... + 1405669.

It is an arithmetic number, because the mean of its divisors is an integer number (29518209).

Almost surely, 2^115261537 is an apocalyptic number.

It is an amenable number.

115261537 is a deficient number, since it is larger than the sum of its proper divisors (2811299).

115261537 is an equidigital number, since it uses as much as digits as its factorization.

115261537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811298.

The product of its digits is 6300, while the sum is 31.

The square root of 115261537 is about 10735.9925950049. The cubic root of 115261537 is about 486.6627832200.

The spelling of 115261537 in words is "one hundred fifteen million, two hundred sixty-one thousand, five hundred thirty-seven".