11505071 has 2 divisors, whose sum is σ = 11505072. Its totient is φ = 11505070.

The previous prime is 11505049. The next prime is 11505121. The reversal of 11505071 is 17050511.

It is a weak prime.

It is an emirp because it is prime and its reverse (17050511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11505071 - 2¹⁰ = 11504047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11505001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752535 + 5752536.

It is an arithmetic number, because the mean of its divisors is an integer number (5752536).

Almost surely, 2^11505071 is an apocalyptic number.

11505071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505071 is an equidigital number, since it uses as much as digits as its factorization.

11505071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 175, while the sum is 20.

The square root of 11505071 is about 3391.9125873171. The cubic root of 11505071 is about 225.7510441542.

Adding to 11505071 its reverse (17050511), we get a palindrome (28555582).

The spelling of 11505071 in words is "eleven million, five hundred five thousand, seventy-one".