551774449 has 2 divisors, whose sum is σ = 551774450. Its totient is φ = 551774448.

The previous prime is 551774417. The next prime is 551774453. The reversal of 551774449 is 944477155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331786225 + 219988224 = 18215^2 + 14832^2 .

It is a cyclic number.

It is not a de Polignac number, because 551774449 - 2⁵ = 551774417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551774399 and 551774408.

It is not a weakly prime, because it can be changed into another prime (551774479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275887224 + 275887225.

It is an arithmetic number, because the mean of its divisors is an integer number (275887225).

Almost surely, 2^551774449 is an apocalyptic number.

It is an amenable number.

551774449 is a deficient number, since it is larger than the sum of its proper divisors (1).

551774449 is an equidigital number, since it uses as much as digits as its factorization.

551774449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 46.

The square root of 551774449 is about 23489.8797144643. The cubic root of 551774449 is about 820.2014421810.

The spelling of 551774449 in words is "five hundred fifty-one million, seven hundred seventy-four thousand, four hundred forty-nine".