55753666 has 4 divisors (see below), whose sum is σ = 83630502. Its totient is φ = 27876832.

The previous prime is 55753651. The next prime is 55753669. The reversal of 55753666 is 66635755.

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., 54243225 + 1510441 = 7365^2 + 1229^2 .

It is not an unprimeable number, because it can be changed into a prime (55753669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13938415 + ... + 13938418.

Almost surely, 2^55753666 is an apocalyptic number.

55753666 is a deficient number, since it is larger than the sum of its proper divisors (27876836).

55753666 is a wasteful number, since it uses less digits than its factorization.

55753666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27876835.

The product of its digits is 567000, while the sum is 43.

The square root of 55753666 is about 7466.8377510162. The cubic root of 55753666 is about 382.0244358152.

The spelling of 55753666 in words is "fifty-five million, seven hundred fifty-three thousand, six hundred sixty-six".