5105666 has 4 divisors (see below), whose sum is σ = 7658502. Its totient is φ = 2552832.

The previous prime is 5105641. The next prime is 5105671. The reversal of 5105666 is 6665015.

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., 3530641 + 1575025 = 1879^2 + 1255^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276415 + ... + 1276418.

Almost surely, 2^5105666 is an apocalyptic number.

5105666 is a deficient number, since it is larger than the sum of its proper divisors (2552836).

5105666 is a wasteful number, since it uses less digits than its factorization.

5105666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552835.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 5105666 is about 2259.5720833822. The cubic root of 5105666 is about 172.1937828556.

The spelling of 5105666 in words is "five million, one hundred five thousand, six hundred sixty-six".