11573951 has 2 divisors, whose sum is σ = 11573952. Its totient is φ = 11573950.

The previous prime is 11573941. The next prime is 11573953. The reversal of 11573951 is 15937511.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15937511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11573951 - 2¹⁰ = 11572927 is a prime.

Together with 11573953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11573953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5786975 + 5786976.

It is an arithmetic number, because the mean of its divisors is an integer number (5786976).

Almost surely, 2^11573951 is an apocalyptic number.

11573951 is a deficient number, since it is larger than the sum of its proper divisors (1).

11573951 is an equidigital number, since it uses as much as digits as its factorization.

11573951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4725, while the sum is 32.

The square root of 11573951 is about 3402.0509990298. The cubic root of 11573951 is about 226.2006662681.

The spelling of 11573951 in words is "eleven million, five hundred seventy-three thousand, nine hundred fifty-one".