11551291 has 2 divisors, whose sum is σ = 11551292. Its totient is φ = 11551290.

The previous prime is 11551273. The next prime is 11551307. The reversal of 11551291 is 19215511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11551291 - 2⁹ = 11550779 is a prime.

It is not a weakly prime, because it can be changed into another prime (11551201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775645 + 5775646.

It is an arithmetic number, because the mean of its divisors is an integer number (5775646).

Almost surely, 2^11551291 is an apocalyptic number.

11551291 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551291 is an equidigital number, since it uses as much as digits as its factorization.

11551291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 25.

The square root of 11551291 is about 3398.7190233969. The cubic root of 11551291 is about 226.0529478887.

The spelling of 11551291 in words is "eleven million, five hundred fifty-one thousand, two hundred ninety-one".