1273495552 has 80 divisors (see below), whose sum is σ = 2919232800. Its totient is φ = 544210944.

The previous prime is 1273495549. The next prime is 1273495583. The reversal of 1273495552 is 2555943721.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1273495499 and 1273495508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3669843 + ... + 3670189.

It is an arithmetic number, because the mean of its divisors is an integer number (36490410).

Almost surely, 2^1273495552 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 1273495552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459616400).

1273495552 is an abundant number, since it is smaller than the sum of its proper divisors (1645737248).

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

1273495552 is an frugal number, since it uses more digits than its factorization.

1273495552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 356 counting only the distinct ones).

The product of its digits is 378000, while the sum is 43.

The square root of 1273495552 is about 35686.0694389281. The cubic root of 1273495552 is about 1083.9247779395.

The spelling of 1273495552 in words is "one billion, two hundred seventy-three million, four hundred ninety-five thousand, five hundred fifty-two".