4937221 has 4 divisors (see below), whose sum is σ = 5107500. Its totient is φ = 4766944.

The previous prime is 4937201. The next prime is 4937237. The reversal of 4937221 is 1227394.

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 1368900 + 3568321 = 1170^2 + 1889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4937221 is a prime.

It is a Duffinian number.

4937221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4937221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4937201) 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, 85096 + ... + 85153.

It is an arithmetic number, because the mean of its divisors is an integer number (1276875).

Almost surely, 2^4937221 is an apocalyptic number.

It is an amenable number.

4937221 is a deficient number, since it is larger than the sum of its proper divisors (170279).

4937221 is a wasteful number, since it uses less digits than its factorization.

4937221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170278.

The product of its digits is 3024, while the sum is 28.

The square root of 4937221 is about 2221.9858235371. The cubic root of 4937221 is about 170.2789077927.

The spelling of 4937221 in words is "four million, nine hundred thirty-seven thousand, two hundred twenty-one".