621046201 has 2 divisors, whose sum is σ = 621046202. Its totient is φ = 621046200.

The previous prime is 621046199. The next prime is 621046211. The reversal of 621046201 is 102640126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371564176 + 249482025 = 19276^2 + 15795^2 .

It is a cyclic number.

It is not a de Polignac number, because 621046201 - 2¹ = 621046199 is a prime.

Together with 621046199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (621046211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310523100 + 310523101.

It is an arithmetic number, because the mean of its divisors is an integer number (310523101).

Almost surely, 2^621046201 is an apocalyptic number.

It is an amenable number.

621046201 is a deficient number, since it is larger than the sum of its proper divisors (1).

621046201 is an equidigital number, since it uses as much as digits as its factorization.

621046201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 621046201 is about 24920.7985626464. The cubic root of 621046201 is about 853.1812511600.

Adding to 621046201 its reverse (102640126), we get a palindrome (723686327).

The spelling of 621046201 in words is "six hundred twenty-one million, forty-six thousand, two hundred one".