53030277821 has 2 divisors, whose sum is σ = 53030277822. Its totient is φ = 53030277820.

The previous prime is 53030277799. The next prime is 53030277889. The reversal of 53030277821 is 12877203035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52803444100 + 226833721 = 229790^2 + 15061^2 .

It is a cyclic number.

It is not a de Polignac number, because 53030277821 - 2²⁶ = 52963168957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53030274821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26515138910 + 26515138911.

It is an arithmetic number, because the mean of its divisors is an integer number (26515138911).

Almost surely, 2^53030277821 is an apocalyptic number.

It is an amenable number.

53030277821 is a deficient number, since it is larger than the sum of its proper divisors (1).

53030277821 is an equidigital number, since it uses as much as digits as its factorization.

53030277821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 53030277821 in words is "fifty-three billion, thirty million, two hundred seventy-seven thousand, eight hundred twenty-one".