5215533021 has 6 divisors (see below), whose sum is σ = 7533547710. Its totient is φ = 3477022008.

The previous prime is 5215533019. The next prime is 5215533053. The reversal of 5215533021 is 1203355125.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4807896921 + 407636100 = 69339^2 + 20190^2 .

It is not a de Polignac number, because 5215533021 - 2¹ = 5215533019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215533121) 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, 289751826 + ... + 289751843.

It is an arithmetic number, because the mean of its divisors is an integer number (1255591285).

Almost surely, 2^5215533021 is an apocalyptic number.

It is an amenable number.

5215533021 is a deficient number, since it is larger than the sum of its proper divisors (2318014689).

5215533021 is a wasteful number, since it uses less digits than its factorization.

5215533021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579503675 (or 579503672 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 5215533021 is about 72218.6473218656. The cubic root of 5215533021 is about 1734.2015356644.

Adding to 5215533021 its reverse (1203355125), we get a palindrome (6418888146).

The spelling of 5215533021 in words is "five billion, two hundred fifteen million, five hundred thirty-three thousand, twenty-one".