525310521 has 8 divisors (see below), whose sum is σ = 704463360. Its totient is φ = 348182352.

The previous prime is 525310519. The next prime is 525310529. The reversal of 525310521 is 125013525.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 525310521 - 2¹ = 525310519 is a prime.

It is a super-2 number, since 2×525310521² = 551902286946582882, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 525310491 and 525310500.

It is not an unprimeable number, because it can be changed into a prime (525310529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505561 + ... + 506598.

It is an arithmetic number, because the mean of its divisors is an integer number (88057920).

Almost surely, 2^525310521 is an apocalyptic number.

It is an amenable number.

525310521 is a deficient number, since it is larger than the sum of its proper divisors (179152839).

525310521 is a wasteful number, since it uses less digits than its factorization.

525310521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012335.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 525310521 is about 22919.6535968587. The cubic root of 525310521 is about 806.8733403879.

The spelling of 525310521 in words is "five hundred twenty-five million, three hundred ten thousand, five hundred twenty-one".