4952221 has 4 divisors (see below), whose sum is σ = 4964092. Its totient is φ = 4940352.

The previous prime is 4952209. The next prime is 4952231. The reversal of 4952221 is 1222594.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1222594 = 2 ⋅611297.

It can be written as a sum of positive squares in 2 ways, for example, as 972196 + 3980025 = 986^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 4952221 - 2⁷ = 4952093 is a prime.

It is a Duffinian number.

4952221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4952201) 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, 5286 + ... + 6151.

It is an arithmetic number, because the mean of its divisors is an integer number (1241023).

Almost surely, 2^4952221 is an apocalyptic number.

It is an amenable number.

4952221 is a deficient number, since it is larger than the sum of its proper divisors (11871).

4952221 is a wasteful number, since it uses less digits than its factorization.

4952221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11870.

The product of its digits is 1440, while the sum is 25.

The square root of 4952221 is about 2225.3586227842. The cubic root of 4952221 is about 170.4511775313.

The spelling of 4952221 in words is "four million, nine hundred fifty-two thousand, two hundred twenty-one".