549780156 has 24 divisors (see below), whose sum is σ = 1425356240. Its totient is φ = 183260016.

The previous prime is 549780149. The next prime is 549780157. The reversal of 549780156 is 651087945.

549780156 is a `hidden beast` number, since 5 + 497 + 8 + 0 + 156 = 666.

549780156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549780157) 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, 2545171 + ... + 2545386.

Almost surely, 2^549780156 is an apocalyptic number.

It is an amenable number.

549780156 is an abundant number, since it is smaller than the sum of its proper divisors (875576084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549780156 is a wasteful number, since it uses less digits than its factorization.

549780156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090570 (or 5090562 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 549780156 is about 23447.3912408182. The cubic root of 549780156 is about 819.2120906794.

The spelling of 549780156 in words is "five hundred forty-nine million, seven hundred eighty thousand, one hundred fifty-six".