525335021 has 8 divisors (see below), whose sum is σ = 546425088. Its totient is φ = 504504000.

The previous prime is 525334987. The next prime is 525335053. The reversal of 525335021 is 120533525.

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 525335021 - 2²² = 521140717 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 (525335221) 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, 60620 + ... + 68741.

It is an arithmetic number, because the mean of its divisors is an integer number (68303136).

Almost surely, 2^525335021 is an apocalyptic number.

It is an amenable number.

525335021 is a deficient number, since it is larger than the sum of its proper divisors (21090067).

525335021 is a wasteful number, since it uses less digits than its factorization.

525335021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129523.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 525335021 is about 22920.1880664187. The cubic root of 525335021 is about 806.8858841366.

Adding to 525335021 its reverse (120533525), we get a palindrome (645868546).

The spelling of 525335021 in words is "five hundred twenty-five million, three hundred thirty-five thousand, twenty-one".