11522538 has 24 divisors (see below), whose sum is σ = 25547808. Its totient is φ = 3751272.

The previous prime is 11522527. The next prime is 11522543. The reversal of 11522538 is 83522511.

It is a happy number.

It is a super-2 number, since 2×11522538² = 265537763922888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6670 + ... + 8217.

It is an arithmetic number, because the mean of its divisors is an integer number (1064492).

Almost surely, 2^11522538 is an apocalyptic number.

11522538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11522538 is an abundant number, since it is smaller than the sum of its proper divisors (14025270).

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

11522538 is a wasteful number, since it uses less digits than its factorization.

11522538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14938 (or 14935 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 11522538 is about 3394.4864118155. The cubic root of 11522538 is about 225.8652314736.

Subtracting from 11522538 its sum of digits (27), we obtain a palindrome (11522511).

The spelling of 11522538 in words is "eleven million, five hundred twenty-two thousand, five hundred thirty-eight".