10553021 has 6 divisors (see below), whose sum is σ = 11032350. Its totient is φ = 10093688.

The previous prime is 10553009. The next prime is 10553027. The reversal of 10553021 is 12035501.

10553021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6996025 + 3556996 = 2645^2 + 1886^2 .

It is not a de Polignac number, because 10553021 - 2¹⁴ = 10536637 is a prime.

It is a super-2 number, since 2×10553021² = 222732504452882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10553027) 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 5 ways as a sum of consecutive naturals, for example, 9446 + ... + 10503.

It is an arithmetic number, because the mean of its divisors is an integer number (1838725).

Almost surely, 2^10553021 is an apocalyptic number.

It is an amenable number.

10553021 is a deficient number, since it is larger than the sum of its proper divisors (479329).

10553021 is an equidigital number, since it uses as much as digits as its factorization.

10553021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19995 (or 19972 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 10553021 is about 3248.5413649821. The cubic root of 10553021 is about 219.3439200510.

Adding to 10553021 its reverse (12035501), we get a palindrome (22588522).

The spelling of 10553021 in words is "ten million, five hundred fifty-three thousand, twenty-one".