53443235032553 has 2 divisors, whose sum is σ = 53443235032554. Its totient is φ = 53443235032552.

The previous prime is 53443235032547. The next prime is 53443235032609. The reversal of 53443235032553 is 35523053234435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52607561153449 + 835673879104 = 7253107^2 + 914152^2 .

It is a cyclic number.

It is not a de Polignac number, because 53443235032553 - 2⁶ = 53443235032489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53443235032498 and 53443235032507.

It is not a weakly prime, because it can be changed into another prime (53443235032513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26721617516276 + 26721617516277.

It is an arithmetic number, because the mean of its divisors is an integer number (26721617516277).

Almost surely, 2^{53443235032553} is an apocalyptic number.

It is an amenable number.

53443235032553 is a deficient number, since it is larger than the sum of its proper divisors (1).

53443235032553 is an equidigital number, since it uses as much as digits as its factorization.

53443235032553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720000, while the sum is 47.

Adding to 53443235032553 its reverse (35523053234435), we get a palindrome (88966288266988).

The spelling of 53443235032553 in words is "fifty-three trillion, four hundred forty-three billion, two hundred thirty-five million, thirty-two thousand, five hundred fifty-three".