275512649 has 2 divisors, whose sum is σ = 275512650. Its totient is φ = 275512648.

The previous prime is 275512609. The next prime is 275512667. The reversal of 275512649 is 946215572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208600249 + 66912400 = 14443^2 + 8180^2 .

It is a cyclic number.

It is not a de Polignac number, because 275512649 - 2¹⁶ = 275447113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (275512609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137756324 + 137756325.

It is an arithmetic number, because the mean of its divisors is an integer number (137756325).

Almost surely, 2^275512649 is an apocalyptic number.

It is an amenable number.

275512649 is a deficient number, since it is larger than the sum of its proper divisors (1).

275512649 is an equidigital number, since it uses as much as digits as its factorization.

275512649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 275512649 is about 16598.5737037855. The cubic root of 275512649 is about 650.6995616205.

The spelling of 275512649 in words is "two hundred seventy-five million, five hundred twelve thousand, six hundred forty-nine".