20174513 has 2 divisors, whose sum is σ = 20174514. Its totient is φ = 20174512.

The previous prime is 20174491. The next prime is 20174533. The reversal of 20174513 is 31547102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18386944 + 1787569 = 4288^2 + 1337^2 .

It is a cyclic number.

It is not a de Polignac number, because 20174513 - 2⁶ = 20174449 is a prime.

It is not a weakly prime, because it can be changed into another prime (20174533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10087256 + 10087257.

It is an arithmetic number, because the mean of its divisors is an integer number (10087257).

Almost surely, 2^20174513 is an apocalyptic number.

It is an amenable number.

20174513 is a deficient number, since it is larger than the sum of its proper divisors (1).

20174513 is an equidigital number, since it uses as much as digits as its factorization.

20174513 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 23.

The square root of 20174513 is about 4491.6047243719. The cubic root of 20174513 is about 272.2289783567.

The spelling of 20174513 in words is "twenty million, one hundred seventy-four thousand, five hundred thirteen".