11508997 has 2 divisors, whose sum is σ = 11508998. Its totient is φ = 11508996.

The previous prime is 11508989. The next prime is 11509009. The reversal of 11508997 is 79980511.

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., 7845601 + 3663396 = 2801^2 + 1914^2 .

It is a cyclic number.

It is not a de Polignac number, because 11508997 - 2³ = 11508989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11508977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5754498 + 5754499.

It is an arithmetic number, because the mean of its divisors is an integer number (5754499).

Almost surely, 2^11508997 is an apocalyptic number.

It is an amenable number.

11508997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11508997 is an equidigital number, since it uses as much as digits as its factorization.

11508997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 11508997 is about 3392.4912674906. The cubic root of 11508997 is about 225.7767197253.

The spelling of 11508997 in words is "eleven million, five hundred eight thousand, nine hundred ninety-seven".