20456113 has 2 divisors, whose sum is σ = 20456114. Its totient is φ = 20456112.

The previous prime is 20456087. The next prime is 20456123. The reversal of 20456113 is 31165402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20358144 + 97969 = 4512^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 20456113 - 2⁵ = 20456081 is a prime.

It is not a weakly prime, because it can be changed into another prime (20456123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10228056 + 10228057.

It is an arithmetic number, because the mean of its divisors is an integer number (10228057).

Almost surely, 2^20456113 is an apocalyptic number.

It is an amenable number.

20456113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20456113 is an equidigital number, since it uses as much as digits as its factorization.

20456113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20456113 is about 4522.8434640169. The cubic root of 20456113 is about 273.4897397856.

The spelling of 20456113 in words is "twenty million, four hundred fifty-six thousand, one hundred thirteen".