20453701 has 2 divisors, whose sum is σ = 20453702. Its totient is φ = 20453700.

The previous prime is 20453687. The next prime is 20453717. The reversal of 20453701 is 10735402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19351201 + 1102500 = 4399^2 + 1050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20453701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20453761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10226850 + 10226851.

It is an arithmetic number, because the mean of its divisors is an integer number (10226851).

Almost surely, 2^20453701 is an apocalyptic number.

It is an amenable number.

20453701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20453701 is an equidigital number, since it uses as much as digits as its factorization.

20453701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20453701 is about 4522.5768097402. The cubic root of 20453701 is about 273.4789902168.

The spelling of 20453701 in words is "twenty million, four hundred fifty-three thousand, seven hundred one".