275575987 has 2 divisors, whose sum is σ = 275575988. Its totient is φ = 275575986.

The previous prime is 275575969. The next prime is 275576023. The reversal of 275575987 is 789575572.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 275575987 - 2¹¹ = 275573939 is a prime.

It is a super-2 number, since 2×275575987² = 151884249222048338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (275575907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137787993 + 137787994.

It is an arithmetic number, because the mean of its divisors is an integer number (137787994).

Almost surely, 2^275575987 is an apocalyptic number.

275575987 is a deficient number, since it is larger than the sum of its proper divisors (1).

275575987 is an equidigital number, since it uses as much as digits as its factorization.

275575987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6174000, while the sum is 55.

The square root of 275575987 is about 16600.4815291605. The cubic root of 275575987 is about 650.7494212200.

The spelling of 275575987 in words is "two hundred seventy-five million, five hundred seventy-five thousand, nine hundred eighty-seven".