115431545 has 8 divisors (see below), whose sum is σ = 139789320. Its totient is φ = 91497600.

The previous prime is 115431541. The next prime is 115431557. The reversal of 115431545 is 545134511.

It can be written as a sum of positive squares in 4 ways, for example, as 1283689 + 114147856 = 1133^2 + 10684^2 .

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

It is not a de Polignac number, because 115431545 - 2² = 115431541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115431541) 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, 105356 + ... + 106445.

It is an arithmetic number, because the mean of its divisors is an integer number (17473665).

Almost surely, 2^115431545 is an apocalyptic number.

It is an amenable number.

115431545 is a deficient number, since it is larger than the sum of its proper divisors (24357775).

115431545 is a wasteful number, since it uses less digits than its factorization.

115431545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211915.

The product of its digits is 6000, while the sum is 29.

The square root of 115431545 is about 10743.9073432341. The cubic root of 115431545 is about 486.9019376501.

The spelling of 115431545 in words is "one hundred fifteen million, four hundred thirty-one thousand, five hundred forty-five".