549451143 has 12 divisors (see below), whose sum is σ = 793951600. Its totient is φ = 366162336.

The previous prime is 549451109. The next prime is 549451151. The reversal of 549451143 is 341154945.

It is a happy number.

549451143 is a `hidden beast` number, since 54 + 94 + 511 + 4 + 3 = 666.

It is not a de Polignac number, because 549451143 - 2⁶ = 549451079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 549451098 and 549451107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549451153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17430 + ... + 37452.

Almost surely, 2^549451143 is an apocalyptic number.

549451143 is a deficient number, since it is larger than the sum of its proper divisors (244500457).

549451143 is a wasteful number, since it uses less digits than its factorization.

549451143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23078 (or 23075 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 549451143 is about 23440.3742077638. The cubic root of 549451143 is about 819.0486403686.

The spelling of 549451143 in words is "five hundred forty-nine million, four hundred fifty-one thousand, one hundred forty-three".