180054477 has 6 divisors (see below), whose sum is σ = 260078702. Its totient is φ = 120036312.

The previous prime is 180054451. The next prime is 180054487. The reversal of 180054477 is 774450081.

180054477 is a `hidden beast` number, since 180 + 0 + 5 + 4 + 477 = 666.

It can be written as a sum of positive squares in only one way, i.e., 104468841 + 75585636 = 10221^2 + 8694^2 .

It is not a de Polignac number, because 180054477 - 2⁸ = 180054221 is a prime.

It is a super-2 number, since 2×180054477² = 64839229375487058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180054487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10003018 + ... + 10003035.

Almost surely, 2^180054477 is an apocalyptic number.

It is an amenable number.

180054477 is a deficient number, since it is larger than the sum of its proper divisors (80024225).

180054477 is a wasteful number, since it uses less digits than its factorization.

180054477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20006059 (or 20006056 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 180054477 is about 13418.4379493293. The cubic root of 180054477 is about 564.6785724940.

The spelling of 180054477 in words is "one hundred eighty million, fifty-four thousand, four hundred seventy-seven".