1272551252 has 48 divisors (see below), whose sum is σ = 2709116928. Its totient is φ = 510574080.

The previous prime is 1272551219. The next prime is 1272551261. The reversal of 1272551252 is 2521552721.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 83918 + ... + 97914.

It is an arithmetic number, because the mean of its divisors is an integer number (56439936).

Almost surely, 2^1272551252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272551252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354558464).

1272551252 is an abundant number, since it is smaller than the sum of its proper divisors (1436565676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272551252 is a wasteful number, since it uses less digits than its factorization.

1272551252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14216 (or 14214 counting only the distinct ones).

The product of its digits is 14000, while the sum is 32.

The square root of 1272551252 is about 35672.8363324253. The cubic root of 1272551252 is about 1083.6568007542.

The spelling of 1272551252 in words is "one billion, two hundred seventy-two million, five hundred fifty-one thousand, two hundred fifty-two".