45533440 has 36 divisors (see below), whose sum is σ = 109069884. Its totient is φ = 18212864.

The previous prime is 45533417. The next prime is 45533441. The reversal of 45533440 is 4433554.

It can be written as a sum of positive squares in 2 ways, for example, as 11614464 + 33918976 = 3408^2 + 5824^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45533399 and 45533408.

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 3 ways as a sum of consecutive naturals, for example, 16507 + ... + 19066.

It is an arithmetic number, because the mean of its divisors is an integer number (3029719).

Almost surely, 2^45533440 is an apocalyptic number.

45533440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45533440 is an abundant number, since it is smaller than the sum of its proper divisors (63536444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45533440 is an equidigital number, since it uses as much as digits as its factorization.

45533440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35594 (or 35580 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 45533440 is about 6747.8470640642. The cubic root of 45533440 is about 357.0892865935.

Adding to 45533440 its reverse (4433554), we get a palindrome (49966994).

The spelling of 45533440 in words is "forty-five million, five hundred thirty-three thousand, four hundred forty".