20295013 has 2 divisors, whose sum is σ = 20295014. Its totient is φ = 20295012.

The previous prime is 20294977. The next prime is 20295047. The reversal of 20295013 is 31059202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16916769 + 3378244 = 4113^2 + 1838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20295013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20295073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10147506 + 10147507.

It is an arithmetic number, because the mean of its divisors is an integer number (10147507).

Almost surely, 2^20295013 is an apocalyptic number.

It is an amenable number.

20295013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20295013 is an equidigital number, since it uses as much as digits as its factorization.

20295013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20295013 is about 4504.9986681463. The cubic root of 20295013 is about 272.7699000811.

The spelling of 20295013 in words is "twenty million, two hundred ninety-five thousand, thirteen".