45331021 has 8 divisors (see below), whose sum is σ = 47250944. Its totient is φ = 43439760.

The previous prime is 45331009. The next prime is 45331037. The reversal of 45331021 is 12013354.

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 45331021 - 2⁷ = 45330893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45331021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45331001) 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, 3906 + ... + 10291.

It is an arithmetic number, because the mean of its divisors is an integer number (5906368).

Almost surely, 2^45331021 is an apocalyptic number.

It is an amenable number.

45331021 is a deficient number, since it is larger than the sum of its proper divisors (1919923).

45331021 is a wasteful number, since it uses less digits than its factorization.

45331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14331.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 45331021 is about 6732.8315737140. The cubic root of 45331021 is about 356.5593534935.

Adding to 45331021 its reverse (12013354), we get a palindrome (57344375).

The spelling of 45331021 in words is "forty-five million, three hundred thirty-one thousand, twenty-one".