551432449 has 4 divisors (see below), whose sum is σ = 551855664. Its totient is φ = 551009236.

The previous prime is 551432443. The next prime is 551432489. The reversal of 551432449 is 944234155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 944234155 = 5 ⋅188846831.

It is a cyclic number.

It is not a de Polignac number, because 551432449 - 2¹¹ = 551430401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551432443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209647 + ... + 212260.

It is an arithmetic number, because the mean of its divisors is an integer number (137963916).

Almost surely, 2^551432449 is an apocalyptic number.

It is an amenable number.

551432449 is a deficient number, since it is larger than the sum of its proper divisors (423215).

551432449 is a wasteful number, since it uses less digits than its factorization.

551432449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423214.

The product of its digits is 86400, while the sum is 37.

The square root of 551432449 is about 23482.5988553226. The cubic root of 551432449 is about 820.0319484875.

The spelling of 551432449 in words is "five hundred fifty-one million, four hundred thirty-two thousand, four hundred forty-nine".