1553045317 has 2 divisors, whose sum is σ = 1553045318. Its totient is φ = 1553045316.

The previous prime is 1553045309. The next prime is 1553045321. The reversal of 1553045317 is 7135403551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1392110721 + 160934596 = 37311^2 + 12686^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553045317 - 2³ = 1553045309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553145317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776522658 + 776522659.

It is an arithmetic number, because the mean of its divisors is an integer number (776522659).

Almost surely, 2^1553045317 is an apocalyptic number.

It is an amenable number.

1553045317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553045317 is an equidigital number, since it uses as much as digits as its factorization.

1553045317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 1553045317 is about 39408.6959566033. The cubic root of 1553045317 is about 1158.0519515870.

Adding to 1553045317 its reverse (7135403551), we get a palindrome (8688448868).

The spelling of 1553045317 in words is "one billion, five hundred fifty-three million, forty-five thousand, three hundred seventeen".