40115601 has 8 divisors (see below), whose sum is σ = 59430560. Its totient is φ = 26743716.

The previous prime is 40115599. The next prime is 40115609. The reversal of 40115601 is 10651104.

It is not a de Polignac number, because 40115601 - 2¹ = 40115599 is a prime.

It is a super-2 number, since 2×40115601² = 3218522887182402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40115609) 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 7 ways as a sum of consecutive naturals, for example, 742855 + ... + 742908.

It is an arithmetic number, because the mean of its divisors is an integer number (7428820).

Almost surely, 2^40115601 is an apocalyptic number.

It is an amenable number.

40115601 is a deficient number, since it is larger than the sum of its proper divisors (19314959).

40115601 is a wasteful number, since it uses less digits than its factorization.

40115601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485772 (or 1485766 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 40115601 is about 6333.6877883268. The cubic root of 40115601 is about 342.3243306788.

Adding to 40115601 its reverse (10651104), we get a palindrome (50766705).

The spelling of 40115601 in words is "forty million, one hundred fifteen thousand, six hundred one".