20020597 has 2 divisors, whose sum is σ = 20020598. Its totient is φ = 20020596.

The previous prime is 20020579. The next prime is 20020601. The reversal of 20020597 is 79502002.

Together with previous prime (20020579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19722481 + 298116 = 4441^2 + 546^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020597 - 2²³ = 11631989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010298 + 10010299.

It is an arithmetic number, because the mean of its divisors is an integer number (10010299).

Almost surely, 2^20020597 is an apocalyptic number.

It is an amenable number.

20020597 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020597 is an equidigital number, since it uses as much as digits as its factorization.

20020597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 20020597 is about 4474.4381770229. The cubic root of 20020597 is about 271.5349111229.

Adding to 20020597 its reverse (79502002), we get a palindrome (99522599).

The spelling of 20020597 in words is "twenty million, twenty thousand, five hundred ninety-seven".