365220001 has 2 divisors, whose sum is σ = 365220002. Its totient is φ = 365220000.

The previous prime is 365219999. The next prime is 365220017. The reversal of 365220001 is 100022563.

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., 358117776 + 7102225 = 18924^2 + 2665^2 .

It is a cyclic number.

It is not a de Polignac number, because 365220001 - 2¹ = 365219999 is a prime.

Together with 365219999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (365220091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182610000 + 182610001.

It is an arithmetic number, because the mean of its divisors is an integer number (182610001).

Almost surely, 2^365220001 is an apocalyptic number.

It is an amenable number.

365220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

365220001 is an equidigital number, since it uses as much as digits as its factorization.

365220001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 365220001 is about 19110.7299965229. The cubic root of 365220001 is about 714.8005057403.

Adding to 365220001 its reverse (100022563), we get a palindrome (465242564).

It can be divided in two parts, 3652 and 20001, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 365220001 in words is "three hundred sixty-five million, two hundred twenty thousand, one".