40115533 has 8 divisors (see below), whose sum is σ = 40498400. Its totient is φ = 39734928.

The previous prime is 40115527. The next prime is 40115557. The reversal of 40115533 is 33551104.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40115533 - 2⁵ = 40115501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40115503) 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, 64498 + ... + 65116.

It is an arithmetic number, because the mean of its divisors is an integer number (5062300).

Almost surely, 2^40115533 is an apocalyptic number.

It is an amenable number.

40115533 is a deficient number, since it is larger than the sum of its proper divisors (382867).

40115533 is a wasteful number, since it uses less digits than its factorization.

40115533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 40115533 is about 6333.6824202039. The cubic root of 40115533 is about 342.3241372539.

Adding to 40115533 its reverse (33551104), we get a palindrome (73666637).

The spelling of 40115533 in words is "forty million, one hundred fifteen thousand, five hundred thirty-three".