549777955 has 8 divisors (see below), whose sum is σ = 661626000. Its totient is φ = 438560736.

The previous prime is 549777953. The next prime is 549777959. The reversal of 549777955 is 559777945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 549777955 - 2¹ = 549777953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 549777955.

It is not an unprimeable number, because it can be changed into a prime (549777953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155785 + ... + 159274.

It is an arithmetic number, because the mean of its divisors is an integer number (82703250).

Almost surely, 2^549777955 is an apocalyptic number.

549777955 is a deficient number, since it is larger than the sum of its proper divisors (111848045).

549777955 is a wasteful number, since it uses less digits than its factorization.

549777955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315413.

The product of its digits is 13891500, while the sum is 58.

The square root of 549777955 is about 23447.3443059123. The cubic root of 549777955 is about 819.2109974617.

The spelling of 549777955 in words is "five hundred forty-nine million, seven hundred seventy-seven thousand, nine hundred fifty-five".