40534215 has 16 divisors (see below), whose sum is σ = 64994400. Its totient is φ = 21571712.

The previous prime is 40534213. The next prime is 40534223. The reversal of 40534215 is 51243504.

It is a cyclic number.

It is not a de Polignac number, because 40534215 - 2¹ = 40534213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40534213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4981 + ... + 10289.

It is an arithmetic number, because the mean of its divisors is an integer number (4062150).

Almost surely, 2^40534215 is an apocalyptic number.

40534215 is a deficient number, since it is larger than the sum of its proper divisors (24460185).

40534215 is a wasteful number, since it uses less digits than its factorization.

40534215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5826.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40534215 is about 6366.6486474440. The cubic root of 40534215 is about 343.5109527006.

Adding to 40534215 its reverse (51243504), we get a palindrome (91777719).

The spelling of 40534215 in words is "forty million, five hundred thirty-four thousand, two hundred fifteen".