11155401 has 24 divisors (see below), whose sum is σ = 17297280. Its totient is φ = 7175952.

The previous prime is 11155399. The next prime is 11155409. The reversal of 11155401 is 10455111.

It is a happy number.

11155401 is a `hidden beast` number, since 111 + 554 + 0 + 1 = 666.

It is not a de Polignac number, because 11155401 - 2¹ = 11155399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11155409) 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 23 ways as a sum of consecutive naturals, for example, 6256 + ... + 7838.

It is an arithmetic number, because the mean of its divisors is an integer number (720720).

Almost surely, 2^11155401 is an apocalyptic number.

It is an amenable number.

11155401 is a deficient number, since it is larger than the sum of its proper divisors (6141879).

11155401 is an equidigital number, since it uses as much as digits as its factorization.

11155401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 11155401 is about 3339.9702094480. The cubic root of 11155401 is about 223.4404147272.

The spelling of 11155401 in words is "eleven million, one hundred fifty-five thousand, four hundred one".