534534002521 has 6 divisors (see below), whose sum is σ = 549371324670. Its totient is φ = 520087136256.

The previous prime is 534534002503. The next prime is 534534002531. The reversal of 534534002521 is 125200435435.

It can be written as a sum of positive squares in 3 ways, for example, as 364242425625 + 170291576896 = 603525^2 + 412664^2 .

It is not a de Polignac number, because 534534002521 - 2¹⁷ = 534533871449 is a prime.

It is a super-2 number, since 2×534534002521² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (534534002531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 195226536 + ... + 195229273.

It is an arithmetic number, because the mean of its divisors is an integer number (91561887445).

Almost surely, 2^534534002521 is an apocalyptic number.

It is an amenable number.

534534002521 is a deficient number, since it is larger than the sum of its proper divisors (14837322149).

534534002521 is an equidigital number, since it uses as much as digits as its factorization.

534534002521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390455883 (or 390455846 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 534534002521 its reverse (125200435435), we get a palindrome (659734437956).

The spelling of 534534002521 in words is "five hundred thirty-four billion, five hundred thirty-four million, two thousand, five hundred twenty-one".