5487221 has 2 divisors, whose sum is σ = 5487222. Its totient is φ = 5487220.

The previous prime is 5487173. The next prime is 5487247. The reversal of 5487221 is 1227845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3204100 + 2283121 = 1790^2 + 1511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5487221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5489221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2743610 + 2743611.

It is an arithmetic number, because the mean of its divisors is an integer number (2743611).

Almost surely, 2^5487221 is an apocalyptic number.

It is an amenable number.

5487221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5487221 is an equidigital number, since it uses as much as digits as its factorization.

5487221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 29.

The square root of 5487221 is about 2342.4818035579. The cubic root of 5487221 is about 176.3806006848.

The spelling of 5487221 in words is "five million, four hundred eighty-seven thousand, two hundred twenty-one".