451144229 has 2 divisors, whose sum is σ = 451144230. Its totient is φ = 451144228.

The previous prime is 451144217. The next prime is 451144231. The reversal of 451144229 is 922441154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436893604 + 14250625 = 20902^2 + 3775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451144229 is a prime.

It is a super-2 number, since 2×451144229² = 407062230720008882, which contains 22 as substring.

Together with 451144231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 451144195 and 451144204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451140229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225572114 + 225572115.

It is an arithmetic number, because the mean of its divisors is an integer number (225572115).

Almost surely, 2^451144229 is an apocalyptic number.

It is an amenable number.

451144229 is a deficient number, since it is larger than the sum of its proper divisors (1).

451144229 is an equidigital number, since it uses as much as digits as its factorization.

451144229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 451144229 is about 21240.1560493326. The cubic root of 451144229 is about 766.9583889415.

The spelling of 451144229 in words is "four hundred fifty-one million, one hundred forty-four thousand, two hundred twenty-nine".