40030055 has 16 divisors (see below), whose sum is σ = 54455520. Its totient is φ = 28003968.

The previous prime is 40030043. The next prime is 40030069. The reversal of 40030055 is 55003004.

It is a cyclic number.

It is not a de Polignac number, because 40030055 - 2¹² = 40025959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14972 + ... + 17441.

It is an arithmetic number, because the mean of its divisors is an integer number (3403470).

Almost surely, 2^40030055 is an apocalyptic number.

40030055 is a deficient number, since it is larger than the sum of its proper divisors (14425465).

40030055 is a wasteful number, since it uses less digits than its factorization.

40030055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32450.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 40030055 is about 6326.9309305539. The cubic root of 40030055 is about 342.0808234363.

Adding to 40030055 its reverse (55003004), we get a palindrome (95033059).

The spelling of 40030055 in words is "forty million, thirty thousand, fifty-five".