53501269021 has 2 divisors, whose sum is σ = 53501269022. Its totient is φ = 53501269020.

The previous prime is 53501268983. The next prime is 53501269039. The reversal of 53501269021 is 12096210535.

53501269021 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., 31830484921 + 21670784100 = 178411^2 + 147210^2 .

It is a cyclic number.

It is not a de Polignac number, because 53501269021 - 2⁷ = 53501268893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53501269621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26750634510 + 26750634511.

It is an arithmetic number, because the mean of its divisors is an integer number (26750634511).

Almost surely, 2^53501269021 is an apocalyptic number.

It is an amenable number.

53501269021 is a deficient number, since it is larger than the sum of its proper divisors (1).

53501269021 is an equidigital number, since it uses as much as digits as its factorization.

53501269021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

Adding to 53501269021 its reverse (12096210535), we get a palindrome (65597479556).

The spelling of 53501269021 in words is "fifty-three billion, five hundred one million, two hundred sixty-nine thousand, twenty-one".