45532240 has 40 divisors (see below), whose sum is σ = 114008328. Its totient is φ = 16811520.

The previous prime is 45532231. The next prime is 45532259. The reversal of 45532240 is 4223554.

It can be written as a sum of positive squares in 4 ways, for example, as 9388096 + 36144144 = 3064^2 + 6012^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20851 + ... + 22930.

Almost surely, 2^45532240 is an apocalyptic number.

45532240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45532240 is an abundant number, since it is smaller than the sum of its proper divisors (68476088).

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

45532240 is a wasteful number, since it uses less digits than its factorization.

45532240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43807 (or 43801 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 45532240 is about 6747.7581462290. The cubic root of 45532240 is about 357.0861496250.

Adding to 45532240 its reverse (4223554), we get a palindrome (49755794).

The spelling of 45532240 in words is "forty-five million, five hundred thirty-two thousand, two hundred forty".