20657053 has 2 divisors, whose sum is σ = 20657054. Its totient is φ = 20657052.

The previous prime is 20657051. The next prime is 20657069. The reversal of 20657053 is 35075602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12517444 + 8139609 = 3538^2 + 2853^2 .

It is a cyclic number.

It is not a de Polignac number, because 20657053 - 2¹ = 20657051 is a prime.

Together with 20657051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20657051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10328526 + 10328527.

It is an arithmetic number, because the mean of its divisors is an integer number (10328527).

Almost surely, 2^20657053 is an apocalyptic number.

It is an amenable number.

20657053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20657053 is an equidigital number, since it uses as much as digits as its factorization.

20657053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 20657053 is about 4545.0030803070. The cubic root of 20657053 is about 274.3823183378.

Subtracting from 20657053 its sum of digits (28), we obtain a square (20657025 = 4545²).

The spelling of 20657053 in words is "twenty million, six hundred fifty-seven thousand, fifty-three".