1275550671 has 4 divisors (see below), whose sum is σ = 1700734232. Its totient is φ = 850367112.

The previous prime is 1275550663. The next prime is 1275550697. The reversal of 1275550671 is 1760555721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1760555721 = 3 ⋅586851907.

It is not a de Polignac number, because 1275550671 - 2³ = 1275550663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275500671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212591776 + ... + 212591781.

It is an arithmetic number, because the mean of its divisors is an integer number (425183558).

Almost surely, 2^1275550671 is an apocalyptic number.

1275550671 is a deficient number, since it is larger than the sum of its proper divisors (425183561).

1275550671 is an equidigital number, since it uses as much as digits as its factorization.

1275550671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425183560.

The product of its (nonzero) digits is 73500, while the sum is 39.

The square root of 1275550671 is about 35714.8522466494. The cubic root of 1275550671 is about 1084.5075301934.

The spelling of 1275550671 in words is "one billion, two hundred seventy-five million, five hundred fifty thousand, six hundred seventy-one".