1252044647 has 8 divisors (see below), whose sum is σ = 1477066752. Its totient is φ = 1038562200.

The previous prime is 1252044641. The next prime is 1252044659. The reversal of 1252044647 is 7464402521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1252044647 - 2¹⁰ = 1252043623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252044641) 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, 2884679 + ... + 2885112.

It is an arithmetic number, because the mean of its divisors is an integer number (184633344).

Almost surely, 2^1252044647 is an apocalyptic number.

1252044647 is a deficient number, since it is larger than the sum of its proper divisors (225022105).

1252044647 is an equidigital number, since it uses as much as digits as its factorization.

1252044647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5769829.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 1252044647 is about 35384.2429196952. The cubic root of 1252044647 is about 1077.8043661887.

The spelling of 1252044647 in words is "one billion, two hundred fifty-two million, forty-four thousand, six hundred forty-seven".