1253276161 has 2 divisors, whose sum is σ = 1253276162. Its totient is φ = 1253276160.

The previous prime is 1253276147. The next prime is 1253276243. The reversal of 1253276161 is 1616723521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1215219600 + 38056561 = 34860^2 + 6169^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253276161 - 2⁷ = 1253276033 is a prime.

It is a super-2 number, since 2×1253276161² = 3141402271461795842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1253276131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626638080 + 626638081.

It is an arithmetic number, because the mean of its divisors is an integer number (626638081).

Almost surely, 2^1253276161 is an apocalyptic number.

It is an amenable number.

1253276161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253276161 is an equidigital number, since it uses as much as digits as its factorization.

1253276161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 1253276161 is about 35401.6406540714. The cubic root of 1253276161 is about 1078.1576273439.

Adding to 1253276161 its reverse (1616723521), we get a palindrome (2869999682).

The spelling of 1253276161 in words is "one billion, two hundred fifty-three million, two hundred seventy-six thousand, one hundred sixty-one".