549407951 has 4 divisors (see below), whose sum is σ = 549610272. Its totient is φ = 549205632.

The previous prime is 549407939. The next prime is 549407953. The reversal of 549407951 is 159704945.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 549407951 - 2¹⁰ = 549406927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549407953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97031 + ... + 102536.

It is an arithmetic number, because the mean of its divisors is an integer number (137402568).

Almost surely, 2^549407951 is an apocalyptic number.

549407951 is a deficient number, since it is larger than the sum of its proper divisors (202321).

549407951 is a wasteful number, since it uses less digits than its factorization.

549407951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202320.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 549407951 is about 23439.4528733074. The cubic root of 549407951 is about 819.0271781778.

The spelling of 549407951 in words is "five hundred forty-nine million, four hundred seven thousand, nine hundred fifty-one".