441561101 has 2 divisors, whose sum is σ = 441561102. Its totient is φ = 441561100.

The previous prime is 441561091. The next prime is 441561137. The reversal of 441561101 is 101165144.

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., 302934025 + 138627076 = 17405^2 + 11774^2 .

It is a cyclic number.

It is not a de Polignac number, because 441561101 - 2⁶ = 441561037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441561181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220780550 + 220780551.

It is an arithmetic number, because the mean of its divisors is an integer number (220780551).

Almost surely, 2^441561101 is an apocalyptic number.

It is an amenable number.

441561101 is a deficient number, since it is larger than the sum of its proper divisors (1).

441561101 is an equidigital number, since it uses as much as digits as its factorization.

441561101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 441561101 is about 21013.3553008557. The cubic root of 441561101 is about 761.4889445060.

The spelling of 441561101 in words is "four hundred forty-one million, five hundred sixty-one thousand, one hundred one".