40115522 has 8 divisors (see below), whose sum is σ = 60234636. Its totient is φ = 20037312.

The previous prime is 40115503. The next prime is 40115527. The reversal of 40115522 is 22551104.

It can be written as a sum of positive squares in 2 ways, for example, as 39929761 + 185761 = 6319^2 + 431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 40115494 and 40115503.

It is not an unprimeable number, because it can be changed into a prime (40115527) 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, 7643 + ... + 11774.

Almost surely, 2^40115522 is an apocalyptic number.

40115522 is a deficient number, since it is larger than the sum of its proper divisors (20119114).

40115522 is a wasteful number, since it uses less digits than its factorization.

40115522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20452.

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

The square root of 40115522 is about 6333.6815518307. The cubic root of 40115522 is about 342.3241059646.

Adding to 40115522 its reverse (22551104), we get a palindrome (62666626).

The spelling of 40115522 in words is "forty million, one hundred fifteen thousand, five hundred twenty-two".