55171658 has 8 divisors (see below), whose sum is σ = 83517060. Its totient is φ = 27332640.

The previous prime is 55171639. The next prime is 55171679. The reversal of 55171658 is 85617155.

It is a happy number.

55171658 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 52809289 + 2362369 = 7267^2 + 1537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 126323 + ... + 126758.

Almost surely, 2^55171658 is an apocalyptic number.

55171658 is a deficient number, since it is larger than the sum of its proper divisors (28345402).

55171658 is a wasteful number, since it uses less digits than its factorization.

55171658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253192.

The product of its digits is 42000, while the sum is 38.

The square root of 55171658 is about 7427.7626510276. The cubic root of 55171658 is about 380.6904759184.

The spelling of 55171658 in words is "fifty-five million, one hundred seventy-one thousand, six hundred fifty-eight".