45050221 has 4 divisors (see below), whose sum is σ = 47700252. Its totient is φ = 42400192.

The previous prime is 45050209. The next prime is 45050231. The reversal of 45050221 is 12205054.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24890121 + 20160100 = 4989^2 + 4490^2 .

It is a cyclic number.

It is not a de Polignac number, because 45050221 - 2²¹ = 42953069 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 (45050231) 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, 1324990 + ... + 1325023.

It is an arithmetic number, because the mean of its divisors is an integer number (11925063).

Almost surely, 2^45050221 is an apocalyptic number.

It is an amenable number.

45050221 is a deficient number, since it is larger than the sum of its proper divisors (2650031).

45050221 is a wasteful number, since it uses less digits than its factorization.

45050221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650030.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 45050221 is about 6711.9461410235. The cubic root of 45050221 is about 355.8216003215.

Adding to 45050221 its reverse (12205054), we get a palindrome (57255275).

The spelling of 45050221 in words is "forty-five million, fifty thousand, two hundred twenty-one".