11380555 has 8 divisors (see below), whose sum is σ = 13690944. Its totient is φ = 9081600.

The previous prime is 11380547. The next prime is 11380619. The reversal of 11380555 is 55508311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11380555 - 2³ = 11380547 is a prime.

It is a super-3 number, since 3×11380555³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486 + ... + 4795.

It is an arithmetic number, because the mean of its divisors is an integer number (1711368).

Almost surely, 2^11380555 is an apocalyptic number.

11380555 is a deficient number, since it is larger than the sum of its proper divisors (2310389).

11380555 is an equidigital number, since it uses as much as digits as its factorization.

11380555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 11380555 is about 3373.5078182806. The cubic root of 11380555 is about 224.9336759246.

Adding to 11380555 its reverse (55508311), we get a palindrome (66888866).

It can be divided in two parts, 11380 and 555, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 11380555 in words is "eleven million, three hundred eighty thousand, five hundred fifty-five".