11550197 has 12 divisors (see below), whose sum is σ = 12249216. Its totient is φ = 10878120.

The previous prime is 11550193. The next prime is 11550223. The reversal of 11550197 is 79105511.

It is not a de Polignac number, because 11550197 - 2² = 11550193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139118 + ... + 139200.

It is an arithmetic number, because the mean of its divisors is an integer number (1020768).

Almost surely, 2^11550197 is an apocalyptic number.

It is an amenable number.

11550197 is a deficient number, since it is larger than the sum of its proper divisors (699019).

11550197 is an frugal number, since it uses more digits than its factorization.

11550197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 11550197 is about 3398.5580765966. The cubic root of 11550197 is about 226.0458113204.

The spelling of 11550197 in words is "eleven million, five hundred fifty thousand, one hundred ninety-seven".