8521272 has 48 divisors (see below), whose sum is σ = 24297000. Its totient is φ = 2690496.

The previous prime is 8521259. The next prime is 8521283. The reversal of 8521272 is 2721258.

It is a super-2 number, since 2×8521272² = 145224152995968, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1747 + ... + 4482.

Almost surely, 2^8521272 is an apocalyptic number.

It is an amenable number.

8521272 is an abundant number, since it is smaller than the sum of its proper divisors (15775728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8521272 is a wasteful number, since it uses less digits than its factorization.

8521272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6260 (or 6253 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 8521272 is about 2919.1217857431. The cubic root of 8521272 is about 204.2528583092.

The spelling of 8521272 in words is "eight million, five hundred twenty-one thousand, two hundred seventy-two".