1275881097 has 4 divisors (see below), whose sum is σ = 1701174800. Its totient is φ = 850587396.

The previous prime is 1275881083. The next prime is 1275881107. The reversal of 1275881097 is 7901885721.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7901885721 = 3 ⋅2633961907.

It is not a de Polignac number, because 1275881097 - 2⁴ = 1275881081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275881017) 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, 212646847 + ... + 212646852.

It is an arithmetic number, because the mean of its divisors is an integer number (425293700).

Almost surely, 2^1275881097 is an apocalyptic number.

It is an amenable number.

1275881097 is a deficient number, since it is larger than the sum of its proper divisors (425293703).

1275881097 is an equidigital number, since it uses as much as digits as its factorization.

1275881097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425293702.

The product of its (nonzero) digits is 282240, while the sum is 48.

The square root of 1275881097 is about 35719.4778377288. The cubic root of 1275881097 is about 1084.6011678028.

The spelling of 1275881097 in words is "one billion, two hundred seventy-five million, eight hundred eighty-one thousand, ninety-seven".