1521325135 has 12 divisors (see below), whose sum is σ = 2006641224. Its totient is φ = 1106417840.

The previous prime is 1521325111. The next prime is 1521325147. The reversal of 1521325135 is 5315231251.

It is not a de Polignac number, because 1521325135 - 2¹¹ = 1521323087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1256689 + ... + 1257898.

It is an arithmetic number, because the mean of its divisors is an integer number (167220102).

Almost surely, 2^1521325135 is an apocalyptic number.

1521325135 is a deficient number, since it is larger than the sum of its proper divisors (485316089).

1521325135 is a wasteful number, since it uses less digits than its factorization.

1521325135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514614 (or 2514603 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 1521325135 is about 39004.1681746964. The cubic root of 1521325135 is about 1150.1134443852.

Adding to 1521325135 its reverse (5315231251), we get a palindrome (6836556386).

The spelling of 1521325135 in words is "one billion, five hundred twenty-one million, three hundred twenty-five thousand, one hundred thirty-five".