1745728553 has 2 divisors, whose sum is σ = 1745728554. Its totient is φ = 1745728552.

The previous prime is 1745728547. The next prime is 1745728583. The reversal of 1745728553 is 3558275471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 931653529 + 814075024 = 30523^2 + 28532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1745728553 - 2⁶ = 1745728489 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 = 1745728498 and 1745728507.

It is not a weakly prime, because it can be changed into another prime (1745728583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 872864276 + 872864277.

It is an arithmetic number, because the mean of its divisors is an integer number (872864277).

Almost surely, 2^1745728553 is an apocalyptic number.

It is an amenable number.

1745728553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1745728553 is an equidigital number, since it uses as much as digits as its factorization.

1745728553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176000, while the sum is 47.

The square root of 1745728553 is about 41781.9165788263. The cubic root of 1745728553 is about 1204.0898766345.

The spelling of 1745728553 in words is "one billion, seven hundred forty-five million, seven hundred twenty-eight thousand, five hundred fifty-three".