11315550 has 24 divisors (see below), whose sum is σ = 28062936. Its totient is φ = 3017440.

The previous prime is 11315543. The next prime is 11315567. The reversal of 11315550 is 5551311.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37569 + ... + 37868.

It is an arithmetic number, because the mean of its divisors is an integer number (1169289).

Almost surely, 2^11315550 is an apocalyptic number.

11315550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11315550 is an abundant number, since it is smaller than the sum of its proper divisors (16747386).

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

11315550 is a wasteful number, since it uses less digits than its factorization.

11315550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75452 (or 75447 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 11315550 is about 3363.8593906405. The cubic root of 11315550 is about 224.5045890038.

Adding to 11315550 its reverse (5551311), we get a palindrome (16866861).

The spelling of 11315550 in words is "eleven million, three hundred fifteen thousand, five hundred fifty".