275120857 has 4 divisors (see below), whose sum is σ = 300131856. Its totient is φ = 250109860.

The previous prime is 275120851. The next prime is 275120873. The reversal of 275120857 is 758021572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-275120857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275120851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12505483 + ... + 12505504.

It is an arithmetic number, because the mean of its divisors is an integer number (75032964).

Almost surely, 2^275120857 is an apocalyptic number.

It is an amenable number.

275120857 is a deficient number, since it is larger than the sum of its proper divisors (25010999).

275120857 is a wasteful number, since it uses less digits than its factorization.

275120857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25010998.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 275120857 is about 16586.7675271585. The cubic root of 275120857 is about 650.3909734617.

The spelling of 275120857 in words is "two hundred seventy-five million, one hundred twenty thousand, eight hundred fifty-seven".