45661240 has 16 divisors (see below), whose sum is σ = 102737880. Its totient is φ = 18264480.

The previous prime is 45661181. The next prime is 45661241. The reversal of 45661240 is 4216654.

45661240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 45661199 and 45661208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45661241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570726 + ... + 570805.

Almost surely, 2^45661240 is an apocalyptic number.

45661240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45661240 is an abundant number, since it is smaller than the sum of its proper divisors (57076640).

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

45661240 is a wasteful number, since it uses less digits than its factorization.

45661240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141542 (or 1141538 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 45661240 is about 6757.3101157191. The cubic root of 45661240 is about 357.4230587349.

Adding to 45661240 its reverse (4216654), we get a palindrome (49877894).

The spelling of 45661240 in words is "forty-five million, six hundred sixty-one thousand, two hundred forty".