8252781 has 8 divisors (see below), whose sum is σ = 11024640. Its totient is φ = 5491392.

The previous prime is 8252779. The next prime is 8252801. The reversal of 8252781 is 1872528.

8252781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8252781 - 2¹ = 8252779 is a prime.

It is a super-2 number, since 2×8252781² = 136216788467922, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 8⁴ + 2²¹ + 5⁹ + 2²² + 7 + 8⁴ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8252711) 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 in 7 ways as a sum of consecutive naturals, for example, 541 + ... + 4098.

It is an arithmetic number, because the mean of its divisors is an integer number (1378080).

Almost surely, 2^8252781 is an apocalyptic number.

It is an amenable number.

8252781 is a deficient number, since it is larger than the sum of its proper divisors (2771859).

8252781 is a wasteful number, since it uses less digits than its factorization.

8252781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5235.

The product of its digits is 8960, while the sum is 33.

The square root of 8252781 is about 2872.7653924398. The cubic root of 8252781 is about 202.0847029016.

The spelling of 8252781 in words is "eight million, two hundred fifty-two thousand, seven hundred eighty-one".