7220851 has 8 divisors (see below), whose sum is σ = 7939008. Its totient is φ = 6513000.

The previous prime is 7220849. The next prime is 7220867. The reversal of 7220851 is 1580227.

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

It is a cyclic number.

It is not a de Polignac number, because 7220851 - 2¹ = 7220849 is a prime.

7220851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7220821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065 + ... + 3946.

It is an arithmetic number, because the mean of its divisors is an integer number (992376).

Almost surely, 2^7220851 is an apocalyptic number.

7220851 is a deficient number, since it is larger than the sum of its proper divisors (718157).

7220851 is a wasteful number, since it uses less digits than its factorization.

7220851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7220851 is about 2687.1641185458. The cubic root of 7220851 is about 193.2840993009.

The spelling of 7220851 in words is "seven million, two hundred twenty thousand, eight hundred fifty-one".