312525521 has 16 divisors (see below), whose sum is σ = 392629248. Its totient is φ = 241659600.

The previous prime is 312525511. The next prime is 312525523. The reversal of 312525521 is 125525213.

It is not a de Polignac number, because 312525521 - 2¹⁰ = 312524497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312525523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5405 + ... + 25578.

It is an arithmetic number, because the mean of its divisors is an integer number (24539328).

Almost surely, 2^312525521 is an apocalyptic number.

It is an amenable number.

312525521 is a deficient number, since it is larger than the sum of its proper divisors (80103727).

312525521 is a wasteful number, since it uses less digits than its factorization.

312525521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31132.

The product of its digits is 3000, while the sum is 26.

The square root of 312525521 is about 17678.3913578131. The cubic root of 312525521 is about 678.6228768864.

The spelling of 312525521 in words is "three hundred twelve million, five hundred twenty-five thousand, five hundred twenty-one".