11537987 has 2 divisors, whose sum is σ = 11537988. Its totient is φ = 11537986.

The previous prime is 11537963. The next prime is 11537989. The reversal of 11537987 is 78973511.

11537987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11537987 - 2⁶ = 11537923 is a prime.

Together with 11537989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11537989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5768993 + 5768994.

It is an arithmetic number, because the mean of its divisors is an integer number (5768994).

Almost surely, 2^11537987 is an apocalyptic number.

11537987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11537987 is an equidigital number, since it uses as much as digits as its factorization.

11537987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 41.

The square root of 11537987 is about 3396.7612515454. The cubic root of 11537987 is about 225.9661303565.

The spelling of 11537987 in words is "eleven million, five hundred thirty-seven thousand, nine hundred eighty-seven".