49717221 has 4 divisors (see below), whose sum is σ = 66289632. Its totient is φ = 33144812.

The previous prime is 49717219. The next prime is 49717247. The reversal of 49717221 is 12271794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49717221 - 2¹ = 49717219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49717201) 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, 8286201 + ... + 8286206.

It is an arithmetic number, because the mean of its divisors is an integer number (16572408).

Almost surely, 2^49717221 is an apocalyptic number.

It is an amenable number.

49717221 is a deficient number, since it is larger than the sum of its proper divisors (16572411).

49717221 is a wasteful number, since it uses less digits than its factorization.

49717221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16572410.

The product of its digits is 7056, while the sum is 33.

The square root of 49717221 is about 7051.0439652579. The cubic root of 49717221 is about 367.7073252848.

The spelling of 49717221 in words is "forty-nine million, seven hundred seventeen thousand, two hundred twenty-one".