55667538 has 24 divisors (see below), whose sum is σ = 120779100. Its totient is φ = 18530304.

The previous prime is 55667531. The next prime is 55667561. The reversal of 55667538 is 83576655.

55667538 is a `hidden beast` number, since 5 + 56 + 67 + 538 = 666.

55667538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 48066489 + 7601049 = 6933^2 + 2757^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55667493 and 55667502.

It is not an unprimeable number, because it can be changed into a prime (55667531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15058 + ... + 18386.

Almost surely, 2^55667538 is an apocalyptic number.

55667538 is an abundant number, since it is smaller than the sum of its proper divisors (65111562).

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

55667538 is a wasteful number, since it uses less digits than its factorization.

55667538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266 (or 4263 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 55667538 is about 7461.0681540916. The cubic root of 55667538 is about 381.8276179177.

The spelling of 55667538 in words is "fifty-five million, six hundred sixty-seven thousand, five hundred thirty-eight".