20100473 has 2 divisors, whose sum is σ = 20100474. Its totient is φ = 20100472.

The previous prime is 20100467. The next prime is 20100481. The reversal of 20100473 is 37400102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17707264 + 2393209 = 4208^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100473 - 2⁸ = 20100217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20100403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050236 + 10050237.

It is an arithmetic number, because the mean of its divisors is an integer number (10050237).

Almost surely, 2^20100473 is an apocalyptic number.

It is an amenable number.

20100473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100473 is an equidigital number, since it uses as much as digits as its factorization.

20100473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20100473 is about 4483.3551052755. The cubic root of 20100473 is about 271.8955454241.

Adding to 20100473 its reverse (37400102), we get a palindrome (57500575).

The spelling of 20100473 in words is "twenty million, one hundred thousand, four hundred seventy-three".