11538550 has 12 divisors (see below), whose sum is σ = 21461796. Its totient is φ = 4615400.

The previous prime is 11538533. The next prime is 11538557. The reversal of 11538550 is 5583511.

It is a super-2 number, since 2×11538550² = 266276272205000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11538557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115336 + ... + 115435.

It is an arithmetic number, because the mean of its divisors is an integer number (1788483).

Almost surely, 2^11538550 is an apocalyptic number.

11538550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11538550 is a deficient number, since it is larger than the sum of its proper divisors (9923246).

11538550 is a wasteful number, since it uses less digits than its factorization.

11538550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230783 (or 230778 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 11538550 is about 3396.8441235947. The cubic root of 11538550 is about 225.9698056615.

The spelling of 11538550 in words is "eleven million, five hundred thirty-eight thousand, five hundred fifty".