11281375 has 16 divisors (see below), whose sum is σ = 16091712. Its totient is φ = 7735200.

The previous prime is 11281357. The next prime is 11281381. The reversal of 11281375 is 57318211.

It is not a de Polignac number, because 11281375 - 2⁵ = 11281343 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5572 + ... + 7321.

It is an arithmetic number, because the mean of its divisors is an integer number (1005732).

Almost surely, 2^11281375 is an apocalyptic number.

11281375 is a deficient number, since it is larger than the sum of its proper divisors (4810337).

11281375 is an equidigital number, since it uses as much as digits as its factorization.

11281375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12915 (or 12905 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 11281375 is about 3358.7758186577. The cubic root of 11281375 is about 224.2783463150.

Adding to 11281375 its reverse (57318211), we get a palindrome (68599586).

The spelling of 11281375 in words is "eleven million, two hundred eighty-one thousand, three hundred seventy-five".