11214557 has 4 divisors (see below), whose sum is σ = 11227680. Its totient is φ = 11201436.

The previous prime is 11214499. The next prime is 11214559. The reversal of 11214557 is 75541211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75541211 = 251 ⋅300961.

It is a cyclic number.

It is not a de Polignac number, because 11214557 - 2⁶ = 11214493 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, 5183 + ... + 7020.

It is an arithmetic number, because the mean of its divisors is an integer number (2806920).

Almost surely, 2^11214557 is an apocalyptic number.

It is an amenable number.

11214557 is a deficient number, since it is larger than the sum of its proper divisors (13123).

11214557 is an equidigital number, since it uses as much as digits as its factorization.

11214557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122.

The product of its digits is 1400, while the sum is 26.

The square root of 11214557 is about 3348.8142677670. The cubic root of 11214557 is about 223.8346795160.

Adding to 11214557 its reverse (75541211), we get a palindrome (86755768).

The spelling of 11214557 in words is "eleven million, two hundred fourteen thousand, five hundred fifty-seven".