1253267671 has 4 divisors (see below), whose sum is σ = 1253405152. Its totient is φ = 1253130192.

The previous prime is 1253267633. The next prime is 1253267689. The reversal of 1253267671 is 1767623521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1767623521 = 173 ⋅10217477.

It is a cyclic number.

It is not a de Polignac number, because 1253267671 - 2²³ = 1244879063 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 (1253267371) 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, 54015 + ... + 73648.

It is an arithmetic number, because the mean of its divisors is an integer number (313351288).

Almost surely, 2^1253267671 is an apocalyptic number.

1253267671 is a deficient number, since it is larger than the sum of its proper divisors (137481).

1253267671 is an equidigital number, since it uses as much as digits as its factorization.

1253267671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137480.

The product of its digits is 105840, while the sum is 40.

The square root of 1253267671 is about 35401.5207441714. The cubic root of 1253267671 is about 1078.1551927704.

The spelling of 1253267671 in words is "one billion, two hundred fifty-three million, two hundred sixty-seven thousand, six hundred seventy-one".