7216550 has 24 divisors (see below), whose sum is σ = 14644152. Its totient is φ = 2624000.

The previous prime is 7216543. The next prime is 7216567. The reversal of 7216550 is 556127.

It is a super-3 number, since 3×7216550³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 6011 + ... + 7110.

It is an arithmetic number, because the mean of its divisors is an integer number (610173).

Almost surely, 2^7216550 is an apocalyptic number.

7216550 is an abundant number, since it is smaller than the sum of its proper divisors (7427602).

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

7216550 is a wasteful number, since it uses less digits than its factorization.

7216550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13144 (or 13139 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 7216550 is about 2686.3637132749. The cubic root of 7216550 is about 193.2457160125.

The spelling of 7216550 in words is "seven million, two hundred sixteen thousand, five hundred fifty".