1021552013 has 2 divisors, whose sum is σ = 1021552014. Its totient is φ = 1021552012.

The previous prime is 1021552001. The next prime is 1021552027. The reversal of 1021552013 is 3102551201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 987656329 + 33895684 = 31427^2 + 5822^2 .

It is an emirp because it is prime and its reverse (3102551201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021552013 - 2⁴ = 1021551997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021552093) 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, 510776006 + 510776007.

It is an arithmetic number, because the mean of its divisors is an integer number (510776007).

Almost surely, 2^1021552013 is an apocalyptic number.

It is an amenable number.

1021552013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021552013 is an equidigital number, since it uses as much as digits as its factorization.

1021552013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1021552013 is about 31961.7273156505. The cubic root of 1021552013 is about 1007.1330036176.

The spelling of 1021552013 in words is "one billion, twenty-one million, five hundred fifty-two thousand, thirteen".