11319551 has 2 divisors, whose sum is σ = 11319552. Its totient is φ = 11319550.

The previous prime is 11319547. The next prime is 11319571. The reversal of 11319551 is 15591311.

It is a weak prime.

It is an emirp because it is prime and its reverse (15591311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11319551 - 2² = 11319547 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11319551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11319571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5659775 + 5659776.

It is an arithmetic number, because the mean of its divisors is an integer number (5659776).

Almost surely, 2^11319551 is an apocalyptic number.

11319551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11319551 is an equidigital number, since it uses as much as digits as its factorization.

11319551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675, while the sum is 26.

The square root of 11319551 is about 3364.4540418915. The cubic root of 11319551 is about 224.5310463129.

The spelling of 11319551 in words is "eleven million, three hundred nineteen thousand, five hundred fifty-one".