115672145 has 4 divisors (see below), whose sum is σ = 138806580. Its totient is φ = 92537712.

The previous prime is 115672093. The next prime is 115672147. The reversal of 115672145 is 541276511.

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 25877569 + 89794576 = 5087^2 + 9476^2 .

It is a cyclic number.

It is not a de Polignac number, because 115672145 - 2²⁰ = 114623569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115672147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11567210 + ... + 11567219.

It is an arithmetic number, because the mean of its divisors is an integer number (34701645).

Almost surely, 2^115672145 is an apocalyptic number.

It is an amenable number.

115672145 is a deficient number, since it is larger than the sum of its proper divisors (23134435).

115672145 is an equidigital number, since it uses as much as digits as its factorization.

115672145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23134434.

The product of its digits is 8400, while the sum is 32.

The square root of 115672145 is about 10755.0985583583. The cubic root of 115672145 is about 487.2399945979.

The spelling of 115672145 in words is "one hundred fifteen million, six hundred seventy-two thousand, one hundred forty-five".