11521607 has 2 divisors, whose sum is σ = 11521608. Its totient is φ = 11521606.

The previous prime is 11521603. The next prime is 11521633. The reversal of 11521607 is 70612511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11521607 - 2² = 11521603 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 (11521603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760803 + 5760804.

It is an arithmetic number, because the mean of its divisors is an integer number (5760804).

Almost surely, 2^11521607 is an apocalyptic number.

11521607 is a deficient number, since it is larger than the sum of its proper divisors (1).

11521607 is an equidigital number, since it uses as much as digits as its factorization.

11521607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 11521607 is about 3394.3492748979. The cubic root of 11521607 is about 225.8591481439.

The spelling of 11521607 in words is "eleven million, five hundred twenty-one thousand, six hundred seven".