45248221 has 8 divisors (see below), whose sum is σ = 46202400. Its totient is φ = 44300400.

The previous prime is 45248183. The next prime is 45248233. The reversal of 45248221 is 12284254.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45248221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45248221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45248321) 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, 14446 + ... + 17296.

It is an arithmetic number, because the mean of its divisors is an integer number (5775300).

Almost surely, 2^45248221 is an apocalyptic number.

It is an amenable number.

45248221 is a deficient number, since it is larger than the sum of its proper divisors (954179).

45248221 is a wasteful number, since it uses less digits than its factorization.

45248221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179.

The product of its digits is 5120, while the sum is 28.

The square root of 45248221 is about 6726.6797902085. The cubic root of 45248221 is about 356.3421283839.

Adding to 45248221 its product of digits (5120), we get a triangular number (45253341 = T₉₅₁₃).

The spelling of 45248221 in words is "forty-five million, two hundred forty-eight thousand, two hundred twenty-one".