52521003 has 12 divisors (see below), whose sum is σ = 76075168. Its totient is φ = 34916400.

The previous prime is 52520981. The next prime is 52521047. The reversal of 52521003 is 30012525.

It is a happy number.

It is not a de Polignac number, because 52521003 - 2¹⁶ = 52455467 is a prime.

It is a super-2 number, since 2×52521003² = 5516911512252018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52521083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4648 + ... + 11253.

Almost surely, 2^52521003 is an apocalyptic number.

52521003 is a deficient number, since it is larger than the sum of its proper divisors (23554165).

52521003 is a wasteful number, since it uses less digits than its factorization.

52521003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16274 (or 16271 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 52521003 is about 7247.1375728628. The cubic root of 52521003 is about 374.4935456519.

Adding to 52521003 its reverse (30012525), we get a palindrome (82533528).

It can be divided in two parts, 525 and 21003, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 52521003 in words is "fifty-two million, five hundred twenty-one thousand, three".