11541553 has 2 divisors, whose sum is σ = 11541554. Its totient is φ = 11541552.

The previous prime is 11541533. The next prime is 11541583. The reversal of 11541553 is 35514511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10349089 + 1192464 = 3217^2 + 1092^2 .

It is an emirp because it is prime and its reverse (35514511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11541553 is a prime.

It is not a weakly prime, because it can be changed into another prime (11541533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5770776 + 5770777.

It is an arithmetic number, because the mean of its divisors is an integer number (5770777).

Almost surely, 2^11541553 is an apocalyptic number.

It is an amenable number.

11541553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11541553 is an equidigital number, since it uses as much as digits as its factorization.

11541553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1500, while the sum is 25.

The square root of 11541553 is about 3397.2861227751. The cubic root of 11541553 is about 225.9894074446.

The spelling of 11541553 in words is "eleven million, five hundred forty-one thousand, five hundred fifty-three".