525601997 has 4 divisors (see below), whose sum is σ = 553265280. Its totient is φ = 497938716.

The previous prime is 525601991. The next prime is 525602017. The reversal of 525601997 is 799106525.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525601997 - 2⁴ = 525601981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525601991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13831613 + ... + 13831650.

It is an arithmetic number, because the mean of its divisors is an integer number (138316320).

Almost surely, 2^525601997 is an apocalyptic number.

It is an amenable number.

525601997 is a deficient number, since it is larger than the sum of its proper divisors (27663283).

525601997 is a wasteful number, since it uses less digits than its factorization.

525601997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27663282.

The product of its (nonzero) digits is 170100, while the sum is 44.

The square root of 525601997 is about 22926.0113626422. The cubic root of 525601997 is about 807.0225478371.

The spelling of 525601997 in words is "five hundred twenty-five million, six hundred one thousand, nine hundred ninety-seven".