10115540 has 12 divisors (see below), whose sum is σ = 21242676. Its totient is φ = 4046208.

The previous prime is 10115533. The next prime is 10115557. The reversal of 10115540 is 4551101.

10115540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7907344 + 2208196 = 2812^2 + 1486^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252869 + ... + 252908.

It is an arithmetic number, because the mean of its divisors is an integer number (1770223).

Almost surely, 2^10115540 is an apocalyptic number.

10115540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10115540 is an abundant number, since it is smaller than the sum of its proper divisors (11127136).

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

10115540 is a wasteful number, since it uses less digits than its factorization.

10115540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505786 (or 505784 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 10115540 is about 3180.4936723723. The cubic root of 10115540 is about 216.2700383494.

Adding to 10115540 its reverse (4551101), we get a palindrome (14666641).

The spelling of 10115540 in words is "ten million, one hundred fifteen thousand, five hundred forty".