40515564 has 12 divisors (see below), whose sum is σ = 94536344. Its totient is φ = 13505184.

The previous prime is 40515533. The next prime is 40515569. The reversal of 40515564 is 46551504.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (40515569) 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, 1688137 + ... + 1688160.

Almost surely, 2^40515564 is an apocalyptic number.

It is an amenable number.

40515564 is an abundant number, since it is smaller than the sum of its proper divisors (54020780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40515564 is a wasteful number, since it uses less digits than its factorization.

40515564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376304 (or 3376302 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 40515564 is about 6365.1837365468. The cubic root of 40515564 is about 343.4582580764.

The spelling of 40515564 in words is "forty million, five hundred fifteen thousand, five hundred sixty-four".