1272382553 has 8 divisors (see below), whose sum is σ = 1372895496. Its totient is φ = 1172246400.

The previous prime is 1272382523. The next prime is 1272382567. The reversal of 1272382553 is 3552832721.

It can be written as a sum of positive squares in 4 ways, for example, as 63568729 + 1208813824 = 7973^2 + 34768^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1272382553 - 2¹⁰ = 1272381529 is a prime.

It is a super-2 number, since 2×1272382553² = 3237914722357595618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272382523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87158 + ... + 100703.

It is an arithmetic number, because the mean of its divisors is an integer number (171611937).

Almost surely, 2^1272382553 is an apocalyptic number.

1272382553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1272382553 is a deficient number, since it is larger than the sum of its proper divisors (100512943).

1272382553 is a wasteful number, since it uses less digits than its factorization.

1272382553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188395.

The product of its digits is 100800, while the sum is 38.

The square root of 1272382553 is about 35670.4717238222. The cubic root of 1272382553 is about 1083.6089127295.

The spelling of 1272382553 in words is "one billion, two hundred seventy-two million, three hundred eighty-two thousand, five hundred fifty-three".