6151987 has 2 divisors, whose sum is σ = 6151988. Its totient is φ = 6151986.

The previous prime is 6151969. The next prime is 6152039. The reversal of 6151987 is 7891516.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6151987 is a prime.

It is not a weakly prime, because it can be changed into another prime (6151907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3075993 + 3075994.

It is an arithmetic number, because the mean of its divisors is an integer number (3075994).

Almost surely, 2^6151987 is an apocalyptic number.

6151987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6151987 is an equidigital number, since it uses as much as digits as its factorization.

6151987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 37.

The square root of 6151987 is about 2480.3199390401. The cubic root of 6151987 is about 183.2336093096.

The spelling of 6151987 in words is "six million, one hundred fifty-one thousand, nine hundred eighty-seven".