11545511 has 2 divisors, whose sum is σ = 11545512. Its totient is φ = 11545510.

The previous prime is 11545489. The next prime is 11545519. The reversal of 11545511 is 11554511.

11545511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (11554511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11545511 - 2²² = 7351207 is a prime.

It is a super-2 number, since 2×11545511² = 266597648502242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11545519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5772755 + 5772756.

It is an arithmetic number, because the mean of its divisors is an integer number (5772756).

Almost surely, 2^11545511 is an apocalyptic number.

11545511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11545511 is an equidigital number, since it uses as much as digits as its factorization.

11545511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500, while the sum is 23.

The square root of 11545511 is about 3397.8685966352. The cubic root of 11545511 is about 226.0152377018.

The spelling of 11545511 in words is "eleven million, five hundred forty-five thousand, five hundred eleven".