3155987 has 2 divisors, whose sum is σ = 3155988. Its totient is φ = 3155986.

The previous prime is 3155963. The next prime is 3155993. The reversal of 3155987 is 7895513.

It is a strong prime.

It is an emirp because it is prime and its reverse (7895513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3155987 - 2⁶ = 3155923 is a prime.

It is a Chen prime.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 3155987.

It is not a weakly prime, because it can be changed into another prime (3155687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1577993 + 1577994.

It is an arithmetic number, because the mean of its divisors is an integer number (1577994).

Almost surely, 2^3155987 is an apocalyptic number.

3155987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3155987 is an equidigital number, since it uses as much as digits as its factorization.

3155987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The square root of 3155987 is about 1776.5097804403. The cubic root of 3155987 is about 146.6825332926.

The spelling of 3155987 in words is "three million, one hundred fifty-five thousand, nine hundred eighty-seven".