20300477 has 2 divisors, whose sum is σ = 20300478. Its totient is φ = 20300476.

The previous prime is 20300459. The next prime is 20300479. The reversal of 20300477 is 77400302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12538681 + 7761796 = 3541^2 + 2786^2 .

It is a cyclic number.

It is not a de Polignac number, because 20300477 - 2¹⁰ = 20299453 is a prime.

Together with 20300479, 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 (20300479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150238 + 10150239.

It is an arithmetic number, because the mean of its divisors is an integer number (10150239).

Almost surely, 2^20300477 is an apocalyptic number.

It is an amenable number.

20300477 is a deficient number, since it is larger than the sum of its proper divisors (1).

20300477 is an equidigital number, since it uses as much as digits as its factorization.

20300477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 20300477 is about 4505.6050648054. The cubic root of 20300477 is about 272.7943770466.

Adding to 20300477 its reverse (77400302), we get a palindrome (97700779).

The spelling of 20300477 in words is "twenty million, three hundred thousand, four hundred seventy-seven".