119663521 has 2 divisors, whose sum is σ = 119663522. Its totient is φ = 119663520.

The previous prime is 119663519. The next prime is 119663563. The reversal of 119663521 is 125366911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87684496 + 31979025 = 9364^2 + 5655^2 .

It is an emirp because it is prime and its reverse (125366911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 119663521 - 2¹ = 119663519 is a prime.

Together with 119663519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (119663821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59831760 + 59831761.

It is an arithmetic number, because the mean of its divisors is an integer number (59831761).

Almost surely, 2^119663521 is an apocalyptic number.

It is an amenable number.

119663521 is a deficient number, since it is larger than the sum of its proper divisors (1).

119663521 is an equidigital number, since it uses as much as digits as its factorization.

119663521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 119663521 is about 10939.0822741215. The cubic root of 119663521 is about 492.7809674251.

The spelling of 119663521 in words is "one hundred nineteen million, six hundred sixty-three thousand, five hundred twenty-one".