1315521552 has 20 divisors (see below), whose sum is σ = 3398430800. Its totient is φ = 438507168.

The previous prime is 1315521541. The next prime is 1315521607. The reversal of 1315521552 is 2551255131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13703302 + ... + 13703397.

It is an arithmetic number, because the mean of its divisors is an integer number (169921540).

Almost surely, 2^1315521552 is an apocalyptic number.

1315521552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1315521552 is an abundant number, since it is smaller than the sum of its proper divisors (2082909248).

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

1315521552 is a wasteful number, since it uses less digits than its factorization.

1315521552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27406710 (or 27406704 counting only the distinct ones).

The product of its digits is 7500, while the sum is 30.

The square root of 1315521552 is about 36270.1192719296. The cubic root of 1315521552 is about 1095.7193280265.

Adding to 1315521552 its reverse (2551255131), we get a palindrome (3866776683).

The spelling of 1315521552 in words is "one billion, three hundred fifteen million, five hundred twenty-one thousand, five hundred fifty-two".