11057481 has 12 divisors (see below), whose sum is σ = 16043508. Its totient is φ = 7338624.

The previous prime is 11057477. The next prime is 11057489. The reversal of 11057481 is 18475011.

11057481 is a `hidden beast` number, since 1 + 10 + 574 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3767481 + 7290000 = 1941^2 + 2700^2 .

It is not a de Polignac number, because 11057481 - 2² = 11057477 is a prime.

It is a super-2 number, since 2×11057481² = 244535772130722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11057489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 540 + ... + 4733.

It is an arithmetic number, because the mean of its divisors is an integer number (1336959).

Almost surely, 2^11057481 is an apocalyptic number.

It is an amenable number.

11057481 is a deficient number, since it is larger than the sum of its proper divisors (4986027).

11057481 is a wasteful number, since it uses less digits than its factorization.

11057481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512 (or 5509 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 11057481 is about 3325.2790860317. The cubic root of 11057481 is about 222.7847198805.

The spelling of 11057481 in words is "eleven million, fifty-seven thousand, four hundred eighty-one".