54165566 has 16 divisors (see below), whose sum is σ = 99998304. Its totient is φ = 21428064.

The previous prime is 54165563. The next prime is 54165607. The reversal of 54165566 is 66556145.

54165566 = 995² + 996² + ... + 1046².

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54165563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148625 + ... + 148988.

It is an arithmetic number, because the mean of its divisors is an integer number (6249894).

Almost surely, 2^54165566 is an apocalyptic number.

54165566 is a deficient number, since it is larger than the sum of its proper divisors (45832738).

54165566 is a wasteful number, since it uses less digits than its factorization.

54165566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297635.

The product of its digits is 108000, while the sum is 38.

The square root of 54165566 is about 7359.7259459847. The cubic root of 54165566 is about 378.3622173001.

The spelling of 54165566 in words is "fifty-four million, one hundred sixty-five thousand, five hundred sixty-six".