11081505 has 24 divisors (see below), whose sum is σ = 18139968. Its totient is φ = 5776576.

The previous prime is 11081471. The next prime is 11081507. The reversal of 11081505 is 50518011.

It is not a de Polignac number, because 11081505 - 2⁸ = 11081249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11081507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42004 + ... + 42266.

It is an arithmetic number, because the mean of its divisors is an integer number (755832).

Almost surely, 2^11081505 is an apocalyptic number.

11081505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11081505 is a deficient number, since it is larger than the sum of its proper divisors (7058463).

11081505 is an equidigital number, since it uses as much as digits as its factorization.

11081505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 11081505 is about 3328.8894544577. The cubic root of 11081505 is about 222.9459473382.

Adding to 11081505 its reverse (50518011), we get a palindrome (61599516).

The spelling of 11081505 in words is "eleven million, eighty-one thousand, five hundred five".