2152663621 has 2 divisors, whose sum is σ = 2152663622. Its totient is φ = 2152663620.

The previous prime is 2152663561. The next prime is 2152663651. The reversal of 2152663621 is 1263662512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1623203521 + 529460100 = 40289^2 + 23010^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152663621 - 2¹⁵ = 2152630853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2152663651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076331810 + 1076331811.

It is an arithmetic number, because the mean of its divisors is an integer number (1076331811).

Almost surely, 2^2152663621 is an apocalyptic number.

It is an amenable number.

2152663621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152663621 is an equidigital number, since it uses as much as digits as its factorization.

2152663621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 2152663621 is about 46396.8061508548. The cubic root of 2152663621 is about 1291.1956586624.

The spelling of 2152663621 in words is "two billion, one hundred fifty-two million, six hundred sixty-three thousand, six hundred twenty-one".