10487221 has 4 divisors (see below), whose sum is σ = 11039200. Its totient is φ = 9935244.

The previous prime is 10487219. The next prime is 10487233. The reversal of 10487221 is 12278401.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12278401 = 233 ⋅52697.

It is a cyclic number.

It is not a de Polignac number, because 10487221 - 2¹ = 10487219 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 (10487621) 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, 275961 + ... + 275998.

It is an arithmetic number, because the mean of its divisors is an integer number (2759800).

Almost surely, 2^10487221 is an apocalyptic number.

It is an amenable number.

10487221 is a deficient number, since it is larger than the sum of its proper divisors (551979).

10487221 is an equidigital number, since it uses as much as digits as its factorization.

10487221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551978.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 10487221 is about 3238.3979063728. The cubic root of 10487221 is about 218.8870862089.

The spelling of 10487221 in words is "ten million, four hundred eighty-seven thousand, two hundred twenty-one".