1553344823 has 2 divisors, whose sum is σ = 1553344824. Its totient is φ = 1553344822.

The previous prime is 1553344801. The next prime is 1553344843. The reversal of 1553344823 is 3284433551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1553344823 - 2⁶ = 1553344759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553344843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776672411 + 776672412.

It is an arithmetic number, because the mean of its divisors is an integer number (776672412).

Almost surely, 2^1553344823 is an apocalyptic number.

1553344823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553344823 is an equidigital number, since it uses as much as digits as its factorization.

1553344823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 38.

The square root of 1553344823 is about 39412.4957722801. The cubic root of 1553344823 is about 1158.1263905425.

The spelling of 1553344823 in words is "one billion, five hundred fifty-three million, three hundred forty-four thousand, eight hundred twenty-three".