275486857 has 2 divisors, whose sum is σ = 275486858. Its totient is φ = 275486856.

The previous prime is 275486839. The next prime is 275486873. The reversal of 275486857 is 758684572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266701561 + 8785296 = 16331^2 + 2964^2 .

It is a cyclic number.

It is not a de Polignac number, because 275486857 - 2²⁷ = 141269129 is a prime.

It is not a weakly prime, because it can be changed into another prime (275486837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137743428 + 137743429.

It is an arithmetic number, because the mean of its divisors is an integer number (137743429).

Almost surely, 2^275486857 is an apocalyptic number.

It is an amenable number.

275486857 is a deficient number, since it is larger than the sum of its proper divisors (1).

275486857 is an equidigital number, since it uses as much as digits as its factorization.

275486857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3763200, while the sum is 52.

The square root of 275486857 is about 16597.7967513764. The cubic root of 275486857 is about 650.6792559989.

The spelling of 275486857 in words is "two hundred seventy-five million, four hundred eighty-six thousand, eight hundred fifty-seven".