275399897 has 4 divisors (see below), whose sum is σ = 275441460. Its totient is φ = 275358336.

The previous prime is 275399879. The next prime is 275399903. The reversal of 275399897 is 798993572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92717641 + 182682256 = 9629^2 + 13516^2 .

It is a cyclic number.

It is not a de Polignac number, because 275399897 - 2⁶ = 275399833 is a prime.

It is a super-2 number, since 2×275399897² = 151690206535221218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275399807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8372 + ... + 24917.

It is an arithmetic number, because the mean of its divisors is an integer number (68860365).

Almost surely, 2^275399897 is an apocalyptic number.

It is an amenable number.

275399897 is a deficient number, since it is larger than the sum of its proper divisors (41563).

275399897 is an equidigital number, since it uses as much as digits as its factorization.

275399897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41562.

The product of its digits is 8573040, while the sum is 59.

The square root of 275399897 is about 16595.1769198162. The cubic root of 275399897 is about 650.6107844652.

The spelling of 275399897 in words is "two hundred seventy-five million, three hundred ninety-nine thousand, eight hundred ninety-seven".