55166668 has 6 divisors (see below), whose sum is σ = 96541676. Its totient is φ = 27583332.

The previous prime is 55166663. The next prime is 55166669. The reversal of 55166668 is 86666155.

55166668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55166668² = 6086722516444448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55166663) 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 as a sum of consecutive naturals, namely, 6895830 + ... + 6895837.

Almost surely, 2^55166668 is an apocalyptic number.

It is an amenable number.

55166668 is a deficient number, since it is larger than the sum of its proper divisors (41375008).

55166668 is a wasteful number, since it uses less digits than its factorization.

55166668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13791671 (or 13791669 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 55166668 is about 7427.4267414765. The cubic root of 55166668 is about 380.6789983904.

The spelling of 55166668 in words is "fifty-five million, one hundred sixty-six thousand, six hundred sixty-eight".