549807845 has 16 divisors (see below), whose sum is σ = 695485440. Its totient is φ = 416101824.

The previous prime is 549807809. The next prime is 549807857. The reversal of 549807845 is 548708945.

It is not a de Polignac number, because 549807845 - 2¹⁰ = 549806821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 549807793 and 549807802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69692 + ... + 77178.

It is an arithmetic number, because the mean of its divisors is an integer number (43467840).

Almost surely, 2^549807845 is an apocalyptic number.

It is an amenable number.

549807845 is a deficient number, since it is larger than the sum of its proper divisors (145677595).

549807845 is a wasteful number, since it uses less digits than its factorization.

549807845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The square root of 549807845 is about 23447.9816828656. The cubic root of 549807845 is about 819.2258433176.

The spelling of 549807845 in words is "five hundred forty-nine million, eight hundred seven thousand, eight hundred forty-five".