11281451 has 4 divisors (see below), whose sum is σ = 11328504. Its totient is φ = 11234400.

The previous prime is 11281441. The next prime is 11281453. The reversal of 11281451 is 15418211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11281451 - 2¹⁰ = 11280427 is a prime.

It is a super-2 number, since 2×11281451² = 254542273330802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11281453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23165 + ... + 23646.

It is an arithmetic number, because the mean of its divisors is an integer number (2832126).

Almost surely, 2^11281451 is an apocalyptic number.

11281451 is a deficient number, since it is larger than the sum of its proper divisors (47053).

11281451 is an equidigital number, since it uses as much as digits as its factorization.

11281451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47052.

The product of its digits is 320, while the sum is 23.

The square root of 11281451 is about 3358.7871322845. The cubic root of 11281451 is about 224.2788499509.

Adding to 11281451 its reverse (15418211), we get a palindrome (26699662).

The spelling of 11281451 in words is "eleven million, two hundred eighty-one thousand, four hundred fifty-one".