525487261 has 8 divisors (see below), whose sum is σ = 566453720. Its totient is φ = 484598592.

The previous prime is 525487229. The next prime is 525487273. The reversal of 525487261 is 162784525.

It can be written as a sum of positive squares in 4 ways, for example, as 22382361 + 503104900 = 4731^2 + 22430^2 .

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 525487261 - 2⁵ = 525487229 is a prime.

It is a super-3 number, since 3×525487261³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525487211) 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, 5010 + ... + 32803.

It is an arithmetic number, because the mean of its divisors is an integer number (70806715).

Almost surely, 2^525487261 is an apocalyptic number.

It is an amenable number.

525487261 is a deficient number, since it is larger than the sum of its proper divisors (40966459).

525487261 is a wasteful number, since it uses less digits than its factorization.

525487261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38895.

The product of its digits is 134400, while the sum is 40.

The square root of 525487261 is about 22923.5089155216. The cubic root of 525487261 is about 806.9638207153.

The spelling of 525487261 in words is "five hundred twenty-five million, four hundred eighty-seven thousand, two hundred sixty-one".