55160866 has 4 divisors (see below), whose sum is σ = 82741302. Its totient is φ = 27580432.

The previous prime is 55160849. The next prime is 55160891. The reversal of 55160866 is 66806155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43837641 + 11323225 = 6621^2 + 3365^2 .

It is a super-2 number, since 2×55160866² = 6085442275739912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13790215 + ... + 13790218.

Almost surely, 2^55160866 is an apocalyptic number.

55160866 is a deficient number, since it is larger than the sum of its proper divisors (27580436).

55160866 is a wasteful number, since it uses less digits than its factorization.

55160866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27580435.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 55160866 is about 7427.0361517903. The cubic root of 55160866 is about 380.6656523062.

The spelling of 55160866 in words is "fifty-five million, one hundred sixty thousand, eight hundred sixty-six".