20175013 has 2 divisors, whose sum is σ = 20175014. Its totient is φ = 20175012.

The previous prime is 20175007. The next prime is 20175037. The reversal of 20175013 is 31057102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19210689 + 964324 = 4383^2 + 982^2 .

It is a cyclic number.

It is not a de Polignac number, because 20175013 - 2¹³ = 20166821 is a prime.

It is a super-2 number, since 2×20175013² = 814062299100338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20175613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10087506 + 10087507.

It is an arithmetic number, because the mean of its divisors is an integer number (10087507).

Almost surely, 2^20175013 is an apocalyptic number.

It is an amenable number.

20175013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20175013 is an equidigital number, since it uses as much as digits as its factorization.

20175013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 20175013 is about 4491.6603834217. The cubic root of 20175013 is about 272.2312272894.

The spelling of 20175013 in words is "twenty million, one hundred seventy-five thousand, thirteen".