11895551 has 2 divisors, whose sum is σ = 11895552. Its totient is φ = 11895550.

The previous prime is 11895523. The next prime is 11895581. The reversal of 11895551 is 15559811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11895551 - 2⁶ = 11895487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11895581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5947775 + 5947776.

It is an arithmetic number, because the mean of its divisors is an integer number (5947776).

Almost surely, 2^11895551 is an apocalyptic number.

11895551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11895551 is an equidigital number, since it uses as much as digits as its factorization.

11895551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 35.

The square root of 11895551 is about 3448.9927515146. The cubic root of 11895551 is about 228.2766660425.

The spelling of 11895551 in words is "eleven million, eight hundred ninety-five thousand, five hundred fifty-one".