53030305021 has 2 divisors, whose sum is σ = 53030305022. Its totient is φ = 53030305020.

The previous prime is 53030304991. The next prime is 53030305037. The reversal of 53030305021 is 12050303035.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26606176996 + 26424128025 = 163114^2 + 162555^2 .

It is a cyclic number.

It is not a de Polignac number, because 53030305021 - 2¹³ = 53030296829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53030304983 and 53030305001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53030305721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26515152510 + 26515152511.

It is an arithmetic number, because the mean of its divisors is an integer number (26515152511).

Almost surely, 2^53030305021 is an apocalyptic number.

It is an amenable number.

53030305021 is a deficient number, since it is larger than the sum of its proper divisors (1).

53030305021 is an equidigital number, since it uses as much as digits as its factorization.

53030305021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 22.

Adding to 53030305021 its reverse (12050303035), we get a palindrome (65080608056).

The spelling of 53030305021 in words is "fifty-three billion, thirty million, three hundred five thousand, twenty-one".