7216261 has 4 divisors (see below), whose sum is σ = 7771372. Its totient is φ = 6661152.

The previous prime is 7216247. The next prime is 7216277. The reversal of 7216261 is 1626127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3629025 + 3587236 = 1905^2 + 1894^2 .

It is a cyclic number.

It is not a de Polignac number, because 7216261 - 2⁹ = 7215749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216241) 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 in 3 ways as a sum of consecutive naturals, for example, 277536 + ... + 277561.

It is an arithmetic number, because the mean of its divisors is an integer number (1942843).

Almost surely, 2^7216261 is an apocalyptic number.

It is an amenable number.

7216261 is a deficient number, since it is larger than the sum of its proper divisors (555111).

7216261 is a wasteful number, since it uses less digits than its factorization.

7216261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555110.

The product of its digits is 1008, while the sum is 25.

The square root of 7216261 is about 2686.3099225518. The cubic root of 7216261 is about 193.2431363515.

The spelling of 7216261 in words is "seven million, two hundred sixteen thousand, two hundred sixty-one".