40545520 has 40 divisors (see below), whose sum is σ = 97315200. Its totient is φ = 15694080.

The previous prime is 40545467. The next prime is 40545521. The reversal of 40545520 is 2554504.

40545520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40545521) 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 7 ways as a sum of consecutive naturals, for example, 5695 + ... + 10654.

It is an arithmetic number, because the mean of its divisors is an integer number (2432880).

Almost surely, 2^40545520 is an apocalyptic number.

40545520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40545520 is an abundant number, since it is smaller than the sum of its proper divisors (56769680).

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

40545520 is a wasteful number, since it uses less digits than its factorization.

40545520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16393 (or 16387 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 40545520 is about 6367.5364152865. The cubic root of 40545520 is about 343.5428848214.

The spelling of 40545520 in words is "forty million, five hundred forty-five thousand, five hundred twenty".