7221951 has 12 divisors (see below), whose sum is σ = 11380200. Its totient is φ = 4376880.

The previous prime is 7221937. The next prime is 7221953. The reversal of 7221951 is 1591227.

It is not a de Polignac number, because 7221951 - 2⁹ = 7221439 is a prime.

7221951 is a modest number, since divided by 21951 gives 72 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36376 + ... + 36573.

It is an arithmetic number, because the mean of its divisors is an integer number (948350).

Almost surely, 2^7221951 is an apocalyptic number.

7221951 is a deficient number, since it is larger than the sum of its proper divisors (4158249).

7221951 is a wasteful number, since it uses less digits than its factorization.

7221951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72966 (or 72963 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 7221951 is about 2687.3687874946. The cubic root of 7221951 is about 193.2939135511.

The spelling of 7221951 in words is "seven million, two hundred twenty-one thousand, nine hundred fifty-one".