20036057 has 4 divisors (see below), whose sum is σ = 20189136. Its totient is φ = 19882980.

The previous prime is 20036041. The next prime is 20036083. The reversal of 20036057 is 75063002.

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.

It is a cyclic number.

It is not a de Polignac number, because 20036057 - 2⁴ = 20036041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20036257) 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, 76343 + ... + 76604.

It is an arithmetic number, because the mean of its divisors is an integer number (5047284).

Almost surely, 2^20036057 is an apocalyptic number.

It is an amenable number.

20036057 is a deficient number, since it is larger than the sum of its proper divisors (153079).

20036057 is a wasteful number, since it uses less digits than its factorization.

20036057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153078.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 20036057 is about 4476.1654348337. The cubic root of 20036057 is about 271.6047866555.

Adding to 20036057 its reverse (75063002), we get a palindrome (95099059).

The spelling of 20036057 in words is "twenty million, thirty-six thousand, fifty-seven".