40515212 has 6 divisors (see below), whose sum is σ = 70901628. Its totient is φ = 20257604.

The previous prime is 40515193. The next prime is 40515247. The reversal of 40515212 is 21251504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064398 + ... + 5064405.

It is an arithmetic number, because the mean of its divisors is an integer number (11816938).

Almost surely, 2^40515212 is an apocalyptic number.

It is an amenable number.

40515212 is a deficient number, since it is larger than the sum of its proper divisors (30386416).

40515212 is a wasteful number, since it uses less digits than its factorization.

40515212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10128807 (or 10128805 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 40515212 is about 6365.1560860673. The cubic root of 40515212 is about 343.4572634162.

Adding to 40515212 its reverse (21251504), we get a palindrome (61766716).

The spelling of 40515212 in words is "forty million, five hundred fifteen thousand, two hundred twelve".