11249550 has 96 divisors (see below), whose sum is σ = 33435360. Its totient is φ = 2764800.

The previous prime is 11249543. The next prime is 11249551. The reversal of 11249550 is 5594211.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11249551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17230 + ... + 17870.

It is an arithmetic number, because the mean of its divisors is an integer number (348285).

Almost surely, 2^11249550 is an apocalyptic number.

11249550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11249550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16717680).

11249550 is an abundant number, since it is smaller than the sum of its proper divisors (22185810).

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

11249550 is a wasteful number, since it uses less digits than its factorization.

11249550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 11249550 is about 3354.0348835395. The cubic root of 11249550 is about 224.0672496849.

The spelling of 11249550 in words is "eleven million, two hundred forty-nine thousand, five hundred fifty".