45553840 has 20 divisors (see below), whose sum is σ = 105912864. Its totient is φ = 18221504.

The previous prime is 45553817. The next prime is 45553843. The reversal of 45553840 is 4835554.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 45553796 and 45553805.

It is not an unprimeable number, because it can be changed into a prime (45553843) 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, 284632 + ... + 284791.

Almost surely, 2^45553840 is an apocalyptic number.

45553840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45553840 is an abundant number, since it is smaller than the sum of its proper divisors (60359024).

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

45553840 is a wasteful number, since it uses less digits than its factorization.

45553840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569436 (or 569430 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 45553840 is about 6749.3584880343. The cubic root of 45553840 is about 357.1426066284.

The spelling of 45553840 in words is "forty-five million, five hundred fifty-three thousand, eight hundred forty".