45333621 has 32 divisors (see below), whose sum is σ = 72011520. Its totient is φ = 28112832.

The previous prime is 45333581. The next prime is 45333637. The reversal of 45333621 is 12633354.

It is a happy number.

45333621 is a `hidden beast` number, since 4 + 5 + 3 + 33 + 621 = 666.

It is not a de Polignac number, because 45333621 - 2⁶ = 45333557 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45333721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21991 + ... + 23963.

It is an arithmetic number, because the mean of its divisors is an integer number (2250360).

Almost surely, 2^45333621 is an apocalyptic number.

It is an amenable number.

45333621 is a deficient number, since it is larger than the sum of its proper divisors (26677899).

45333621 is a wasteful number, since it uses less digits than its factorization.

45333621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2036 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 45333621 is about 6733.0246546407. The cubic root of 45333621 is about 356.5661702868.

Adding to 45333621 its reverse (12633354), we get a palindrome (57966975).

It can be divided in two parts, 45333 and 621, that added together give a palindrome (45954).

The spelling of 45333621 in words is "forty-five million, three hundred thirty-three thousand, six hundred twenty-one".