11913553 has 2 divisors, whose sum is σ = 11913554. Its totient is φ = 11913552.

The previous prime is 11913541. The next prime is 11913581. The reversal of 11913553 is 35531911.

11913553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (11913581) can be obtained adding 11913553 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11370384 + 543169 = 3372^2 + 737^2 .

It is a cyclic number.

It is not a de Polignac number, because 11913553 - 2¹⁷ = 11782481 is a prime.

It is not a weakly prime, because it can be changed into another prime (11913053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5956776 + 5956777.

It is an arithmetic number, because the mean of its divisors is an integer number (5956777).

Almost surely, 2^11913553 is an apocalyptic number.

It is an amenable number.

11913553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11913553 is an equidigital number, since it uses as much as digits as its factorization.

11913553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2025, while the sum is 28.

The square root of 11913553 is about 3451.6015123418. The cubic root of 11913553 is about 228.3917613218.

The spelling of 11913553 in words is "eleven million, nine hundred thirteen thousand, five hundred fifty-three".