1553353049 has 2 divisors, whose sum is σ = 1553353050. Its totient is φ = 1553353048.

The previous prime is 1553352989. The next prime is 1553353079. The reversal of 1553353049 is 9403533551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994267024 + 559086025 = 31532^2 + 23645^2 .

It is an emirp because it is prime and its reverse (9403533551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1553353049 - 2²⁰ = 1552304473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1553353079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776676524 + 776676525.

It is an arithmetic number, because the mean of its divisors is an integer number (776676525).

Almost surely, 2^1553353049 is an apocalyptic number.

It is an amenable number.

1553353049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553353049 is an equidigital number, since it uses as much as digits as its factorization.

1553353049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 121500, while the sum is 38.

The square root of 1553353049 is about 39412.6001299077. The cubic root of 1553353049 is about 1158.1284348902.

The spelling of 1553353049 in words is "one billion, five hundred fifty-three million, three hundred fifty-three thousand, forty-nine".