115105540 has 24 divisors (see below), whose sum is σ = 263696832. Its totient is φ = 41856480.

The previous prime is 115105517. The next prime is 115105541. The reversal of 115105540 is 45501511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (115105541) 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, 261384 + ... + 261823.

It is an arithmetic number, because the mean of its divisors is an integer number (10987368).

Almost surely, 2^115105540 is an apocalyptic number.

115105540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115105540 is an abundant number, since it is smaller than the sum of its proper divisors (148591292).

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

115105540 is a wasteful number, since it uses less digits than its factorization.

115105540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523227 (or 523225 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 115105540 is about 10728.7249941454. The cubic root of 115105540 is about 486.4431314278.

The spelling of 115105540 in words is "one hundred fifteen million, one hundred five thousand, five hundred forty".