8152621 has 2 divisors, whose sum is σ = 8152622. Its totient is φ = 8152620.

The previous prime is 8152609. The next prime is 8152631. The reversal of 8152621 is 1262518.

8152621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4862025 + 3290596 = 2205^2 + 1814^2 .

It is a cyclic number.

It is not a de Polignac number, because 8152621 - 2¹³ = 8144429 is a prime.

It is a super-3 number, since 3×8152621³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8152601) 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, 4076310 + 4076311.

It is an arithmetic number, because the mean of its divisors is an integer number (4076311).

Almost surely, 2^8152621 is an apocalyptic number.

It is an amenable number.

8152621 is a deficient number, since it is larger than the sum of its proper divisors (1).

8152621 is an equidigital number, since it uses as much as digits as its factorization.

8152621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

The square root of 8152621 is about 2855.2794959513. The cubic root of 8152621 is about 201.2638384065.

The spelling of 8152621 in words is "eight million, one hundred fifty-two thousand, six hundred twenty-one".