45306221 has 8 divisors (see below), whose sum is σ = 46953984. Its totient is φ = 43670160.

The previous prime is 45306211. The next prime is 45306223. The reversal of 45306221 is 12260354.

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 45306221 - 2¹⁴ = 45289837 is a prime.

It is a super-2 number, since 2×45306221² = 4105307322601682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45306223) 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, 5375 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (5869248).

Almost surely, 2^45306221 is an apocalyptic number.

It is an amenable number.

45306221 is a deficient number, since it is larger than the sum of its proper divisors (1647763).

45306221 is a wasteful number, since it uses less digits than its factorization.

45306221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 45306221 is about 6730.9896003485. The cubic root of 45306221 is about 356.4943186687.

Adding to 45306221 its reverse (12260354), we get a palindrome (57566575).

The spelling of 45306221 in words is "forty-five million, three hundred six thousand, two hundred twenty-one".