550398049 has 4 divisors (see below), whose sum is σ = 555542064. Its totient is φ = 545254036.

The previous prime is 550398029. The next prime is 550398077. The reversal of 550398049 is 940893055.

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: 940893055 = 5 ⋅188178611.

It is a cyclic number.

It is not a de Polignac number, because 550398049 - 2⁷ = 550397921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550397996 and 550398014.

It is not an unprimeable number, because it can be changed into a prime (550398029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2571847 + ... + 2572060.

It is an arithmetic number, because the mean of its divisors is an integer number (138885516).

Almost surely, 2^550398049 is an apocalyptic number.

It is an amenable number.

550398049 is a deficient number, since it is larger than the sum of its proper divisors (5144015).

550398049 is a wasteful number, since it uses less digits than its factorization.

550398049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144014.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 550398049 is about 23460.5636974051. The cubic root of 550398049 is about 819.5188774903.

The spelling of 550398049 in words is "five hundred fifty million, three hundred ninety-eight thousand, forty-nine".