450115901 has 2 divisors, whose sum is σ = 450115902. Its totient is φ = 450115900.

The previous prime is 450115891. The next prime is 450115933. The reversal of 450115901 is 109511054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271920100 + 178195801 = 16490^2 + 13349^2 .

It is a cyclic number.

It is not a de Polignac number, because 450115901 - 2⁶ = 450115837 is a prime.

It is a super-3 number, since 3×450115901³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450115201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225057950 + 225057951.

It is an arithmetic number, because the mean of its divisors is an integer number (225057951).

Almost surely, 2^450115901 is an apocalyptic number.

It is an amenable number.

450115901 is a deficient number, since it is larger than the sum of its proper divisors (1).

450115901 is an equidigital number, since it uses as much as digits as its factorization.

450115901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 450115901 is about 21215.9350724874. The cubic root of 450115901 is about 766.3752163976.

Adding to 450115901 its reverse (109511054), we get a palindrome (559626955).

It can be divided in two parts, 4501 and 15901, that added together give a palindrome (20402).

The spelling of 450115901 in words is "four hundred fifty million, one hundred fifteen thousand, nine hundred one".