11550997 has 2 divisors, whose sum is σ = 11550998. Its totient is φ = 11550996.

The previous prime is 11550983. The next prime is 11551013. The reversal of 11550997 is 79905511.

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., 8708401 + 2842596 = 2951^2 + 1686^2 .

It is a cyclic number.

It is not a de Polignac number, because 11550997 - 2¹¹ = 11548949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11550937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775498 + 5775499.

It is an arithmetic number, because the mean of its divisors is an integer number (5775499).

Almost surely, 2^11550997 is an apocalyptic number.

It is an amenable number.

11550997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11550997 is an equidigital number, since it uses as much as digits as its factorization.

11550997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 37.

The square root of 11550997 is about 3398.6757715322. The cubic root of 11550997 is about 226.0510300618.

The spelling of 11550997 in words is "eleven million, five hundred fifty thousand, nine hundred ninety-seven".