10550021 has 8 divisors (see below), whose sum is σ = 10913184. Its totient is φ = 10193040.

The previous prime is 10550003. The next prime is 10550027. The reversal of 10550021 is 12005501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10550021 - 2¹⁴ = 10533637 is a prime.

It is a super-2 number, since 2×10550021² = 222605886200882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10549978 and 10550005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10550027) 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 7 ways as a sum of consecutive naturals, for example, 2066 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (1364148).

Almost surely, 2^10550021 is an apocalyptic number.

It is an amenable number.

10550021 is a deficient number, since it is larger than the sum of its proper divisors (363163).

10550021 is an equidigital number, since it uses as much as digits as its factorization.

10550021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 10550021 is about 3248.0795864634. The cubic root of 10550021 is about 219.3231331400.

Adding to 10550021 its reverse (12005501), we get a palindrome (22555522).

The spelling of 10550021 in words is "ten million, five hundred fifty thousand, twenty-one".