53021013331 has 16 divisors (see below), whose sum is σ = 65568867840. Its totient is φ = 42151410720.

The previous prime is 53021013251. The next prime is 53021013359. The reversal of 53021013331 is 13331012035.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53021013331 - 2¹⁹ = 53020489043 is a prime.

It is a super-2 number, since 2×53021013331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53021013361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9754555 + ... + 9759988.

It is an arithmetic number, because the mean of its divisors is an integer number (4098054240).

Almost surely, 2^53021013331 is an apocalyptic number.

53021013331 is a deficient number, since it is larger than the sum of its proper divisors (12547854509).

53021013331 is a wasteful number, since it uses less digits than its factorization.

53021013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19514586.

The product of its (nonzero) digits is 810, while the sum is 22.

Adding to 53021013331 its reverse (13331012035), we get a palindrome (66352025366).

The spelling of 53021013331 in words is "fifty-three billion, twenty-one million, thirteen thousand, three hundred thirty-one".