449486551 has 2 divisors, whose sum is σ = 449486552. Its totient is φ = 449486550.

The previous prime is 449486519. The next prime is 449486561. The reversal of 449486551 is 155684944.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 449486551 - 2⁵ = 449486519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449486561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224743275 + 224743276.

It is an arithmetic number, because the mean of its divisors is an integer number (224743276).

Almost surely, 2^449486551 is an apocalyptic number.

449486551 is a deficient number, since it is larger than the sum of its proper divisors (1).

449486551 is an equidigital number, since it uses as much as digits as its factorization.

449486551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 46.

The square root of 449486551 is about 21201.0978725159. The cubic root of 449486551 is about 766.0178690212.

The spelling of 449486551 in words is "four hundred forty-nine million, four hundred eighty-six thousand, five hundred fifty-one".