11214551 has 4 divisors (see below), whose sum is σ = 11281872. Its totient is φ = 11147232.

The previous prime is 11214499. The next prime is 11214559. The reversal of 11214551 is 15541211.

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 11214551 - 2⁶ = 11214487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11214559) 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, 33410 + ... + 33743.

It is an arithmetic number, because the mean of its divisors is an integer number (2820468).

Almost surely, 2^11214551 is an apocalyptic number.

11214551 is a deficient number, since it is larger than the sum of its proper divisors (67321).

11214551 is an equidigital number, since it uses as much as digits as its factorization.

11214551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67320.

The product of its digits is 200, while the sum is 20.

The square root of 11214551 is about 3348.8133719274. The cubic root of 11214551 is about 223.8346395974.

Adding to 11214551 its reverse (15541211), we get a palindrome (26755762).

The spelling of 11214551 in words is "eleven million, two hundred fourteen thousand, five hundred fifty-one".