1553231941 has 2 divisors, whose sum is σ = 1553231942. Its totient is φ = 1553231940.

The previous prime is 1553231923. The next prime is 1553231947. The reversal of 1553231941 is 1491323551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1386072900 + 167159041 = 37230^2 + 12929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553231941 - 2¹¹ = 1553229893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1553231897 and 1553231906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553231947) 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, 776615970 + 776615971.

It is an arithmetic number, because the mean of its divisors is an integer number (776615971).

Almost surely, 2^1553231941 is an apocalyptic number.

It is an amenable number.

1553231941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553231941 is an equidigital number, since it uses as much as digits as its factorization.

1553231941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 34.

The square root of 1553231941 is about 39411.0636877514. The cubic root of 1553231941 is about 1158.0983360740.

The spelling of 1553231941 in words is "one billion, five hundred fifty-three million, two hundred thirty-one thousand, nine hundred forty-one".