40555330 has 16 divisors (see below), whose sum is σ = 74973240. Its totient is φ = 15783552.

The previous prime is 40555309. The next prime is 40555331. The reversal of 40555330 is 3355504.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40538689 + 16641 = 6367^2 + 129^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40555295 and 40555304.

It is not an unprimeable number, because it can be changed into a prime (40555331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54435 + ... + 55174.

Almost surely, 2^40555330 is an apocalyptic number.

40555330 is a deficient number, since it is larger than the sum of its proper divisors (34417910).

40555330 is a wasteful number, since it uses less digits than its factorization.

40555330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109653.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 40555330 is about 6368.3066823136. The cubic root of 40555330 is about 343.5705893532.

The spelling of 40555330 in words is "forty million, five hundred fifty-five thousand, three hundred thirty".