11380553 has 4 divisors (see below), whose sum is σ = 11550480. Its totient is φ = 11210628.

The previous prime is 11380547. The next prime is 11380619. The reversal of 11380553 is 35508311.

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: 35508311 = 127 ⋅279593.

It is a cyclic number.

It is not a de Polignac number, because 11380553 - 2⁶ = 11380489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11380513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84863 + ... + 84996.

It is an arithmetic number, because the mean of its divisors is an integer number (2887620).

Almost surely, 2^11380553 is an apocalyptic number.

It is an amenable number.

11380553 is a deficient number, since it is larger than the sum of its proper divisors (169927).

11380553 is an equidigital number, since it uses as much as digits as its factorization.

11380553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169926.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 11380553 is about 3373.5075218532. The cubic root of 11380553 is about 224.9336627481.

Adding to 11380553 its reverse (35508311), we get a palindrome (46888864).

The spelling of 11380553 in words is "eleven million, three hundred eighty thousand, five hundred fifty-three".