1553124217 has 2 divisors, whose sum is σ = 1553124218. Its totient is φ = 1553124216.

The previous prime is 1553124193. The next prime is 1553124229. The reversal of 1553124217 is 7124213551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 919544976 + 633579241 = 30324^2 + 25171^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553124217 - 2¹⁹ = 1552599929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1553124017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776562108 + 776562109.

It is an arithmetic number, because the mean of its divisors is an integer number (776562109).

Almost surely, 2^1553124217 is an apocalyptic number.

It is an amenable number.

1553124217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553124217 is an equidigital number, since it uses as much as digits as its factorization.

1553124217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 31.

The square root of 1553124217 is about 39409.6969919841. The cubic root of 1553124217 is about 1158.0715622514.

Adding to 1553124217 its reverse (7124213551), we get a palindrome (8677337768).

The spelling of 1553124217 in words is "one billion, five hundred fifty-three million, one hundred twenty-four thousand, two hundred seventeen".