11575540 has 12 divisors (see below), whose sum is σ = 24308676. Its totient is φ = 4630208.

The previous prime is 11575517. The next prime is 11575567. The reversal of 11575540 is 4557511.

It can be written as a sum of positive squares in 2 ways, for example, as 4024036 + 7551504 = 2006^2 + 2748^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11575499 and 11575508.

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, 289369 + ... + 289408.

It is an arithmetic number, because the mean of its divisors is an integer number (2025723).

Almost surely, 2^11575540 is an apocalyptic number.

11575540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11575540 is an abundant number, since it is smaller than the sum of its proper divisors (12733136).

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

11575540 is a wasteful number, since it uses less digits than its factorization.

11575540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578786 (or 578784 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 11575540 is about 3402.2845266086. The cubic root of 11575540 is about 226.2110175708.

The spelling of 11575540 in words is "eleven million, five hundred seventy-five thousand, five hundred forty".