45326721 has 48 divisors (see below), whose sum is σ = 71245440. Its totient is φ = 25555200.

The previous prime is 45326717. The next prime is 45326731. The reversal of 45326721 is 12762354.

It is not a de Polignac number, because 45326721 - 2² = 45326717 is a prime.

It is a super-2 number, since 2×45326721² = 4109023273223682, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45326711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 509245 + ... + 509333.

It is an arithmetic number, because the mean of its divisors is an integer number (1484280).

Almost surely, 2^45326721 is an apocalyptic number.

It is an amenable number.

45326721 is a deficient number, since it is larger than the sum of its proper divisors (25918719).

45326721 is a wasteful number, since it uses less digits than its factorization.

45326721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 187 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 45326721 is about 6732.5122354141. The cubic root of 45326721 is about 356.5480789942.

The spelling of 45326721 in words is "forty-five million, three hundred twenty-six thousand, seven hundred twenty-one".