20449053 has 6 divisors (see below), whose sum is σ = 29537534. Its totient is φ = 13632696.

The previous prime is 20449027. The next prime is 20449061. The reversal of 20449053 is 35094402.

It can be written as a sum of positive squares in only one way, i.e., 15705369 + 4743684 = 3963^2 + 2178^2 .

It is not a de Polignac number, because 20449053 - 2⁵ = 20449021 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 (20449063) 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, 1136050 + ... + 1136067.

Almost surely, 2^20449053 is an apocalyptic number.

It is an amenable number.

20449053 is a deficient number, since it is larger than the sum of its proper divisors (9088481).

20449053 is a wasteful number, since it uses less digits than its factorization.

20449053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272123 (or 2272120 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20449053 is about 4522.0629142019. The cubic root of 20449053 is about 273.4582730754.

The spelling of 20449053 in words is "twenty million, four hundred forty-nine thousand, fifty-three".