1552281001 has 2 divisors, whose sum is σ = 1552281002. Its totient is φ = 1552281000.

The previous prime is 1552280987. The next prime is 1552281007. The reversal of 1552281001 is 1001822551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1364563600 + 187717401 = 36940^2 + 13701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552281001 - 2¹³ = 1552272809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1552281007) 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, 776140500 + 776140501.

It is an arithmetic number, because the mean of its divisors is an integer number (776140501).

Almost surely, 2^1552281001 is an apocalyptic number.

It is an amenable number.

1552281001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552281001 is an equidigital number, since it uses as much as digits as its factorization.

1552281001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 1552281001 is about 39398.9974618644. The cubic root of 1552281001 is about 1157.8619457822.

The spelling of 1552281001 in words is "one billion, five hundred fifty-two million, two hundred eighty-one thousand, one".