49166221 has 8 divisors (see below), whose sum is σ = 53003160. Its totient is φ = 45337152.

The previous prime is 49166219. The next prime is 49166231. The reversal of 49166221 is 12266194.

It can be written as a sum of positive squares in 4 ways, for example, as 6734025 + 42432196 = 2595^2 + 6514^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 49166221 - 2¹ = 49166219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49166231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21111 + ... + 23323.

It is an arithmetic number, because the mean of its divisors is an integer number (6625395).

Almost surely, 2^49166221 is an apocalyptic number.

It is an amenable number.

49166221 is a deficient number, since it is larger than the sum of its proper divisors (3836939).

49166221 is a wasteful number, since it uses less digits than its factorization.

49166221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935.

The product of its digits is 5184, while the sum is 31.

The square root of 49166221 is about 7011.8628765828. The cubic root of 49166221 is about 366.3438818608.

The spelling of 49166221 in words is "forty-nine million, one hundred sixty-six thousand, two hundred twenty-one".