40532091 has 4 divisors (see below), whose sum is σ = 54042792. Its totient is φ = 27021392.

The previous prime is 40532087. The next prime is 40532099. The reversal of 40532091 is 19023504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40532091 - 2² = 40532087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40532099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6755346 + ... + 6755351.

It is an arithmetic number, because the mean of its divisors is an integer number (13510698).

Almost surely, 2^40532091 is an apocalyptic number.

40532091 is a deficient number, since it is larger than the sum of its proper divisors (13510701).

40532091 is a wasteful number, since it uses less digits than its factorization.

40532091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13510700.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 40532091 is about 6366.4818385039. The cubic root of 40532091 is about 343.5049525844.

Adding to 40532091 its reverse (19023504), we get a palindrome (59555595).

The spelling of 40532091 in words is "forty million, five hundred thirty-two thousand, ninety-one".