5521666 has 8 divisors (see below), whose sum is σ = 8718480. Its totient is φ = 2615508.

The previous prime is 5521661. The next prime is 5521667. The reversal of 5521666 is 6661255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (5521661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72616 + ... + 72691.

It is an arithmetic number, because the mean of its divisors is an integer number (1089810).

Almost surely, 2^5521666 is an apocalyptic number.

5521666 is a deficient number, since it is larger than the sum of its proper divisors (3196814).

5521666 is a wasteful number, since it uses less digits than its factorization.

5521666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145328.

The product of its digits is 10800, while the sum is 31.

The square root of 5521666 is about 2349.8225464915. The cubic root of 5521666 is about 176.7488964932.

The spelling of 5521666 in words is "five million, five hundred twenty-one thousand, six hundred sixty-six".