5221718 has 4 divisors (see below), whose sum is σ = 7832580. Its totient is φ = 2610858.

The previous prime is 5221717. The next prime is 5221721. The reversal of 5221718 is 8171225.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305428 + ... + 1305431.

It is an arithmetic number, because the mean of its divisors is an integer number (1958145).

Almost surely, 2^5221718 is an apocalyptic number.

5221718 is a deficient number, since it is larger than the sum of its proper divisors (2610862).

5221718 is a wasteful number, since it uses less digits than its factorization.

5221718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610861.

The product of its digits is 1120, while the sum is 26.

The square root of 5221718 is about 2285.1078749153. The cubic root of 5221718 is about 173.4886781252.

The spelling of 5221718 in words is "five million, two hundred twenty-one thousand, seven hundred eighteen".