20010049 has 4 divisors (see below), whose sum is σ = 20069764. Its totient is φ = 19950336.

The previous prime is 20010041. The next prime is 20010061. The reversal of 20010049 is 94001002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94001002 = 2 ⋅47000501.

It can be written as a sum of positive squares in 2 ways, for example, as 12475024 + 7535025 = 3532^2 + 2745^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010049 - 2³ = 20010041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010041) 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, 29352 + ... + 30025.

It is an arithmetic number, because the mean of its divisors is an integer number (5017441).

Almost surely, 2^20010049 is an apocalyptic number.

It is an amenable number.

20010049 is a deficient number, since it is larger than the sum of its proper divisors (59715).

20010049 is an equidigital number, since it uses as much as digits as its factorization.

20010049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59714.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 20010049 is about 4473.2593262631. The cubic root of 20010049 is about 271.4872160185.

The spelling of 20010049 in words is "twenty million, ten thousand, forty-nine".