20046401 has 2 divisors, whose sum is σ = 20046402. Its totient is φ = 20046400.

The previous prime is 20046373. The next prime is 20046413. The reversal of 20046401 is 10464002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16810000 + 3236401 = 4100^2 + 1799^2 .

It is a cyclic number.

It is not a de Polignac number, because 20046401 - 2²² = 15852097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20046401.

It is not a weakly prime, because it can be changed into another prime (20046421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10023200 + 10023201.

It is an arithmetic number, because the mean of its divisors is an integer number (10023201).

Almost surely, 2^20046401 is an apocalyptic number.

It is an amenable number.

20046401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20046401 is an equidigital number, since it uses as much as digits as its factorization.

20046401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20046401 is about 4477.3207390135. The cubic root of 20046401 is about 271.6515190136.

The spelling of 20046401 in words is "twenty million, forty-six thousand, four hundred one".