521052533 has 8 divisors (see below), whose sum is σ = 551972952. Its totient is φ = 490162176.

The previous prime is 521052527. The next prime is 521052607. The reversal of 521052533 is 335250125.

It can be written as a sum of positive squares in 4 ways, for example, as 396886084 + 124166449 = 19922^2 + 11143^2 .

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 521052533 - 2⁴ = 521052517 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 (521058533) 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, 35141 + ... + 47717.

It is an arithmetic number, because the mean of its divisors is an integer number (68996619).

Almost surely, 2^521052533 is an apocalyptic number.

It is an amenable number.

521052533 is a deficient number, since it is larger than the sum of its proper divisors (30920419).

521052533 is a wasteful number, since it uses less digits than its factorization.

521052533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15031.

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

The square root of 521052533 is about 22826.5751482784. The cubic root of 521052533 is about 804.6873433145.

The spelling of 521052533 in words is "five hundred twenty-one million, fifty-two thousand, five hundred thirty-three".