20245061 has 2 divisors, whose sum is σ = 20245062. Its totient is φ = 20245060.

The previous prime is 20245019. The next prime is 20245063. The reversal of 20245061 is 16054202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 6220036 = 3745^2 + 2494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20245061 is a prime.

Together with 20245063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20245063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122530 + 10122531.

It is an arithmetic number, because the mean of its divisors is an integer number (10122531).

Almost surely, 2^20245061 is an apocalyptic number.

It is an amenable number.

20245061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20245061 is an equidigital number, since it uses as much as digits as its factorization.

20245061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20245061 is about 4499.4511887562. The cubic root of 20245061 is about 272.5459272252.

Adding to 20245061 its reverse (16054202), we get a palindrome (36299263).

The spelling of 20245061 in words is "twenty million, two hundred forty-five thousand, sixty-one".