11557919 has 2 divisors, whose sum is σ = 11557920. Its totient is φ = 11557918.

The previous prime is 11557913. The next prime is 11557933. The reversal of 11557919 is 91975511.

11557919 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11557919 - 2¹² = 11553823 is a prime.

It is a super-2 number, since 2×11557919² = 267170983221122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11557913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778959 + 5778960.

It is an arithmetic number, because the mean of its divisors is an integer number (5778960).

Almost surely, 2^11557919 is an apocalyptic number.

11557919 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557919 is an equidigital number, since it uses as much as digits as its factorization.

11557919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175, while the sum is 38.

The square root of 11557919 is about 3399.6939568143. The cubic root of 11557919 is about 226.0961751628.

The spelling of 11557919 in words is "eleven million, five hundred fifty-seven thousand, nine hundred nineteen".