40551040 has 32 divisors (see below), whose sum is σ = 96943860. Its totient is φ = 16220160.

The previous prime is 40551023. The next prime is 40551079. The reversal of 40551040 is 4015504.

It can be written as a sum of positive squares in 2 ways, for example, as 40246336 + 304704 = 6344^2 + 552^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 40550999 and 40551017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31041 + ... + 32320.

Almost surely, 2^40551040 is an apocalyptic number.

40551040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40551040 is an abundant number, since it is smaller than the sum of its proper divisors (56392820).

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

40551040 is an equidigital number, since it uses as much as digits as its factorization.

40551040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63380 (or 63368 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 40551040 is about 6367.9698491749. The cubic root of 40551040 is about 343.5584744655.

Adding to 40551040 its reverse (4015504), we get a palindrome (44566544).

The spelling of 40551040 in words is "forty million, five hundred fifty-one thousand, forty".