20579113 has 2 divisors, whose sum is σ = 20579114. Its totient is φ = 20579112.

The previous prime is 20579101. The next prime is 20579123. The reversal of 20579113 is 31197502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20322064 + 257049 = 4508^2 + 507^2 .

It is a cyclic number.

It is not a de Polignac number, because 20579113 - 2⁵ = 20579081 is a prime.

It is not a weakly prime, because it can be changed into another prime (20579123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10289556 + 10289557.

It is an arithmetic number, because the mean of its divisors is an integer number (10289557).

Almost surely, 2^20579113 is an apocalyptic number.

It is an amenable number.

20579113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20579113 is an equidigital number, since it uses as much as digits as its factorization.

20579113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 20579113 is about 4536.4207256382. The cubic root of 20579113 is about 274.0367977645.

The spelling of 20579113 in words is "twenty million, five hundred seventy-nine thousand, one hundred thirteen".