275411987 has 2 divisors, whose sum is σ = 275411988. Its totient is φ = 275411986.

The previous prime is 275411971. The next prime is 275411989. The reversal of 275411987 is 789114572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 275411987 - 2⁴ = 275411971 is a prime.

Together with 275411989, 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 (275411989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137705993 + 137705994.

It is an arithmetic number, because the mean of its divisors is an integer number (137705994).

Almost surely, 2^275411987 is an apocalyptic number.

275411987 is a deficient number, since it is larger than the sum of its proper divisors (1).

275411987 is an equidigital number, since it uses as much as digits as its factorization.

275411987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 44.

The square root of 275411987 is about 16595.5411782804. The cubic root of 275411987 is about 650.6203048867.

It can be divided in two parts, 2754 and 11987, that added together give a palindrome (14741).

The spelling of 275411987 in words is "two hundred seventy-five million, four hundred eleven thousand, nine hundred eighty-seven".