451140229 has 2 divisors, whose sum is σ = 451140230. Its totient is φ = 451140228.

The previous prime is 451140227. The next prime is 451140247. The reversal of 451140229 is 922041154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380328004 + 70812225 = 19502^2 + 8415^2 .

It is a cyclic number.

It is not a de Polignac number, because 451140229 - 2¹ = 451140227 is a prime.

Together with 451140227, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 451140197 and 451140206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451140227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225570114 + 225570115.

It is an arithmetic number, because the mean of its divisors is an integer number (225570115).

Almost surely, 2^451140229 is an apocalyptic number.

It is an amenable number.

451140229 is a deficient number, since it is larger than the sum of its proper divisors (1).

451140229 is an equidigital number, since it uses as much as digits as its factorization.

451140229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 451140229 is about 21240.0618878571. The cubic root of 451140229 is about 766.9561222291.

The spelling of 451140229 in words is "four hundred fifty-one million, one hundred forty thousand, two hundred twenty-nine".