1260053521 has 4 divisors (see below), whose sum is σ = 1260839232. Its totient is φ = 1259267812.

The previous prime is 1260053519. The next prime is 1260053569. The reversal of 1260053521 is 1253500621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1260053521 - 2¹ = 1260053519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1260053591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390445 + ... + 393658.

It is an arithmetic number, because the mean of its divisors is an integer number (315209808).

Almost surely, 2^1260053521 is an apocalyptic number.

It is an amenable number.

1260053521 is a deficient number, since it is larger than the sum of its proper divisors (785711).

1260053521 is an equidigital number, since it uses as much as digits as its factorization.

1260053521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785710.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1260053521 is about 35497.2325822732. The cubic root of 1260053521 is about 1080.0975909183.

The spelling of 1260053521 in words is "one billion, two hundred sixty million, fifty-three thousand, five hundred twenty-one".