1252520553 has 4 divisors (see below), whose sum is σ = 1670027408. Its totient is φ = 835013700.

The previous prime is 1252520513. The next prime is 1252520557. The reversal of 1252520553 is 3550252521.

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 not a de Polignac number, because 1252520553 - 2³⁰ = 178778729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1252520553.

It is not an unprimeable number, because it can be changed into a prime (1252520557) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 208753423 + ... + 208753428.

It is an arithmetic number, because the mean of its divisors is an integer number (417506852).

Almost surely, 2^1252520553 is an apocalyptic number.

It is an amenable number.

1252520553 is a deficient number, since it is larger than the sum of its proper divisors (417506855).

1252520553 is an equidigital number, since it uses as much as digits as its factorization.

1252520553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417506854.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 1252520553 is about 35390.9671102670. The cubic root of 1252520553 is about 1077.9409078023.

The spelling of 1252520553 in words is "one billion, two hundred fifty-two million, five hundred twenty thousand, five hundred fifty-three".