20057701 has 4 divisors (see below), whose sum is σ = 20073132. Its totient is φ = 20042272.

The previous prime is 20057683. The next prime is 20057717. The reversal of 20057701 is 10775002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13432225 + 6625476 = 3665^2 + 2574^2 .

It is a cyclic number.

It is not a de Polignac number, because 20057701 - 2⁵ = 20057669 is a prime.

It is a super-2 number, since 2×20057701² = 804622738810802, 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 (20057801) 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 3 ways as a sum of consecutive naturals, for example, 5566 + ... + 8431.

It is an arithmetic number, because the mean of its divisors is an integer number (5018283).

Almost surely, 2^20057701 is an apocalyptic number.

It is an amenable number.

20057701 is a deficient number, since it is larger than the sum of its proper divisors (15431).

20057701 is a wasteful number, since it uses less digits than its factorization.

20057701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15430.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 20057701 is about 4478.5824766325. The cubic root of 20057701 is about 271.7025520404.

The spelling of 20057701 in words is "twenty million, fifty-seven thousand, seven hundred one".