43103020553 has 2 divisors, whose sum is σ = 43103020554. Its totient is φ = 43103020552.

The previous prime is 43103020531. The next prime is 43103020559. The reversal of 43103020553 is 35502030134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42564641344 + 538379209 = 206312^2 + 23203^2 .

It is a cyclic number.

It is not a de Polignac number, because 43103020553 - 2⁸ = 43103020297 is a prime.

It is not a weakly prime, because it can be changed into another prime (43103020559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21551510276 + 21551510277.

It is an arithmetic number, because the mean of its divisors is an integer number (21551510277).

Almost surely, 2^43103020553 is an apocalyptic number.

It is an amenable number.

43103020553 is a deficient number, since it is larger than the sum of its proper divisors (1).

43103020553 is an equidigital number, since it uses as much as digits as its factorization.

43103020553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 43103020553 its reverse (35502030134), we get a palindrome (78605050687).

The spelling of 43103020553 in words is "forty-three billion, one hundred three million, twenty thousand, five hundred fifty-three".