115541478 has 80 divisors (see below), whose sum is σ = 282599856. Its totient is φ = 35069760.

The previous prime is 115541477. The next prime is 115541479. The reversal of 115541478 is 874145511.

It is an interprime number because it is at equal distance from previous prime (115541477) and next prime (115541479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115541471) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 174468 + ... + 175128.

Almost surely, 2^115541478 is an apocalyptic number.

115541478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115541478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141299928).

115541478 is an abundant number, since it is smaller than the sum of its proper divisors (167058378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115541478 is a wasteful number, since it uses less digits than its factorization.

115541478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 762 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 115541478 is about 10749.0221880876. The cubic root of 115541478 is about 487.0564581134.

Adding to 115541478 its reverse (874145511), we get a palindrome (989686989).

The spelling of 115541478 in words is "one hundred fifteen million, five hundred forty-one thousand, four hundred seventy-eight".