549487156 has 6 divisors (see below), whose sum is σ = 961602530. Its totient is φ = 274743576.

The previous prime is 549487139. The next prime is 549487171. The reversal of 549487156 is 651784945.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 505530256 + 43956900 = 22484^2 + 6630^2 .

It is a super-2 number, since 2×549487156² = 603872269217936672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68685891 + ... + 68685898.

Almost surely, 2^549487156 is an apocalyptic number.

It is an amenable number.

549487156 is a deficient number, since it is larger than the sum of its proper divisors (412115374).

549487156 is a wasteful number, since it uses less digits than its factorization.

549487156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137371793 (or 137371791 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The square root of 549487156 is about 23441.1423783057. The cubic root of 549487156 is about 819.0665344402.

The spelling of 549487156 in words is "five hundred forty-nine million, four hundred eighty-seven thousand, one hundred fifty-six".