525141521 has 8 divisors (see below), whose sum is σ = 533053224. Its totient is φ = 517283200.

The previous prime is 525141517. The next prime is 525141527. The reversal of 525141521 is 125141525.

It can be written as a sum of positive squares in 4 ways, for example, as 359633296 + 165508225 = 18964^2 + 12865^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 525141521 - 2² = 525141517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525141527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6701 + ... + 33093.

It is an arithmetic number, because the mean of its divisors is an integer number (66631653).

Almost surely, 2^525141521 is an apocalyptic number.

It is an amenable number.

525141521 is a deficient number, since it is larger than the sum of its proper divisors (7911703).

525141521 is a wasteful number, since it uses less digits than its factorization.

525141521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26691.

The product of its digits is 2000, while the sum is 26.

The square root of 525141521 is about 22915.9665080921. The cubic root of 525141521 is about 806.7868034953.

The spelling of 525141521 in words is "five hundred twenty-five million, one hundred forty-one thousand, five hundred twenty-one".