4655221 has 4 divisors (see below), whose sum is σ = 4711392. Its totient is φ = 4599052.

The previous prime is 4655213. The next prime is 4655251. The reversal of 4655221 is 1225564.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4655221 - 2³ = 4655213 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 (4655201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27961 + ... + 28126.

It is an arithmetic number, because the mean of its divisors is an integer number (1177848).

Almost surely, 2^4655221 is an apocalyptic number.

It is an amenable number.

4655221 is a deficient number, since it is larger than the sum of its proper divisors (56171).

4655221 is an equidigital number, since it uses as much as digits as its factorization.

4655221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56170.

The product of its digits is 2400, while the sum is 25.

The square root of 4655221 is about 2157.5961160514. The cubic root of 4655221 is about 166.9731989931.

The spelling of 4655221 in words is "four million, six hundred fifty-five thousand, two hundred twenty-one".