40115552 has 24 divisors (see below), whose sum is σ = 80276112. Its totient is φ = 19728000.

The previous prime is 40115527. The next prime is 40115557. The reversal of 40115552 is 25551104.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40115557) 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, 8324 + ... + 12227.

It is an arithmetic number, because the mean of its divisors is an integer number (3344838).

Almost surely, 2^40115552 is an apocalyptic number.

It is an amenable number.

40115552 is an abundant number, since it is smaller than the sum of its proper divisors (40160560).

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

40115552 is a wasteful number, since it uses less digits than its factorization.

40115552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20622 (or 20614 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 40115552 is about 6333.6839201211. The cubic root of 40115552 is about 342.3241912991.

Adding to 40115552 its reverse (25551104), we get a palindrome (65666656).

The spelling of 40115552 in words is "forty million, one hundred fifteen thousand, five hundred fifty-two".