1272091253 has 2 divisors, whose sum is σ = 1272091254. Its totient is φ = 1272091252.

The previous prime is 1272091217. The next prime is 1272091277. The reversal of 1272091253 is 3521902721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680531569 + 591559684 = 26087^2 + 24322^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272091253 - 2⁶ = 1272091189 is a prime.

It is a super-2 number, since 2×1272091253² = 3236432311918220018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272093253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636045626 + 636045627.

It is an arithmetic number, because the mean of its divisors is an integer number (636045627).

Almost surely, 2^1272091253 is an apocalyptic number.

It is an amenable number.

1272091253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272091253 is an equidigital number, since it uses as much as digits as its factorization.

1272091253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1272091253 is about 35666.3882808450. The cubic root of 1272091253 is about 1083.5262124003.

Adding to 1272091253 its reverse (3521902721), we get a palindrome (4793993974).

The spelling of 1272091253 in words is "one billion, two hundred seventy-two million, ninety-one thousand, two hundred fifty-three".