6155987 has 2 divisors, whose sum is σ = 6155988. Its totient is φ = 6155986.

The previous prime is 6155983. The next prime is 6156037. The reversal of 6155987 is 7895516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6155987 - 2² = 6155983 is a prime.

It is not a weakly prime, because it can be changed into another prime (6155983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3077993 + 3077994.

It is an arithmetic number, because the mean of its divisors is an integer number (3077994).

Almost surely, 2^6155987 is an apocalyptic number.

6155987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6155987 is an equidigital number, since it uses as much as digits as its factorization.

6155987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 41.

The square root of 6155987 is about 2481.1261555995. The cubic root of 6155987 is about 183.2733133187.

The spelling of 6155987 in words is "six million, one hundred fifty-five thousand, nine hundred eighty-seven".