525687601 has 8 divisors (see below), whose sum is σ = 541912680. Its totient is φ = 509568768.

The previous prime is 525687593. The next prime is 525687619. The reversal of 525687601 is 106786525.

It can be written as a sum of positive squares in 4 ways, for example, as 361201 + 525326400 = 601^2 + 22920^2 .

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 525687601 - 2³ = 525687593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525687101) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16456 + ... + 36361.

It is an arithmetic number, because the mean of its divisors is an integer number (67739085).

Almost surely, 2^525687601 is an apocalyptic number.

It is an amenable number.

525687601 is a deficient number, since it is larger than the sum of its proper divisors (16225079).

525687601 is a wasteful number, since it uses less digits than its factorization.

525687601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53123.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 525687601 is about 22927.8782489789. The cubic root of 525687601 is about 807.0663583048.

The spelling of 525687601 in words is "five hundred twenty-five million, six hundred eighty-seven thousand, six hundred one".