45533421 has 20 divisors (see below), whose sum is σ = 69862012. Its totient is φ = 29533248.

The previous prime is 45533417. The next prime is 45533441. The reversal of 45533421 is 12433554.

It can be written as a sum of positive squares in 2 ways, for example, as 43164900 + 2368521 = 6570^2 + 1539^2 .

It is not a de Polignac number, because 45533421 - 2² = 45533417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45533441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4600 + ... + 10593.

Almost surely, 2^45533421 is an apocalyptic number.

It is an amenable number.

45533421 is a deficient number, since it is larger than the sum of its proper divisors (24328591).

45533421 is a wasteful number, since it uses less digits than its factorization.

45533421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15242 (or 15233 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 45533421 is about 6747.8456562076. The cubic root of 45533421 is about 357.0892369253.

Adding to 45533421 its reverse (12433554), we get a palindrome (57966975).

It can be divided in two parts, 45533 and 421, that added together give a palindrome (45954).

The spelling of 45533421 in words is "forty-five million, five hundred thirty-three thousand, four hundred twenty-one".