54919666 has 4 divisors (see below), whose sum is σ = 82379502. Its totient is φ = 27459832.

The previous prime is 54919663. The next prime is 54919679. The reversal of 54919666 is 66691945.

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., 43890625 + 11029041 = 6625^2 + 3321^2 .

It is not an unprimeable number, because it can be changed into a prime (54919661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13729915 + ... + 13729918.

Almost surely, 2^54919666 is an apocalyptic number.

54919666 is a deficient number, since it is larger than the sum of its proper divisors (27459836).

54919666 is a wasteful number, since it uses less digits than its factorization.

54919666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27459835.

The product of its digits is 349920, while the sum is 46.

The square root of 54919666 is about 7410.7803907551. The cubic root of 54919666 is about 380.1100004722.

The spelling of 54919666 in words is "fifty-four million, nine hundred nineteen thousand, six hundred sixty-six".