11601511 has 2 divisors, whose sum is σ = 11601512. Its totient is φ = 11601510.

The previous prime is 11601493. The next prime is 11601517. The reversal of 11601511 is 11510611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11601511 - 2⁹ = 11600999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11601517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5800755 + 5800756.

It is an arithmetic number, because the mean of its divisors is an integer number (5800756).

Almost surely, 2^11601511 is an apocalyptic number.

11601511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11601511 is an equidigital number, since it uses as much as digits as its factorization.

11601511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 11601511 is about 3406.0990884001. The cubic root of 11601511 is about 226.3800676576.

The spelling of 11601511 in words is "eleven million, six hundred one thousand, five hundred eleven".