53021513213 has 2 divisors, whose sum is σ = 53021513214. Its totient is φ = 53021513212.

The previous prime is 53021513143. The next prime is 53021513243. The reversal of 53021513213 is 31231512035.

53021513213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43381808089 + 9639705124 = 208283^2 + 98182^2 .

It is a cyclic number.

It is not a de Polignac number, because 53021513213 - 2³⁴ = 35841644029 is a prime.

It is a super-2 number, since 2×53021513213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53021513243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26510756606 + 26510756607.

It is an arithmetic number, because the mean of its divisors is an integer number (26510756607).

Almost surely, 2^53021513213 is an apocalyptic number.

It is an amenable number.

53021513213 is a deficient number, since it is larger than the sum of its proper divisors (1).

53021513213 is an equidigital number, since it uses as much as digits as its factorization.

53021513213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 53021513213 in words is "fifty-three billion, twenty-one million, five hundred thirteen thousand, two hundred thirteen".