40144522 has 16 divisors (see below), whose sum is σ = 68548032. Its totient is φ = 17453920.

The previous prime is 40144501. The next prime is 40144529. The reversal of 40144522 is 22544104.

It is a happy number.

It is a super-2 number, since 2×40144522² = 3223165293216968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 40144493 and 40144502.

It is not an unprimeable number, because it can be changed into a prime (40144529) 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, 39163 + ... + 40174.

It is an arithmetic number, because the mean of its divisors is an integer number (4284252).

Almost surely, 2^40144522 is an apocalyptic number.

40144522 is a deficient number, since it is larger than the sum of its proper divisors (28403510).

40144522 is a wasteful number, since it uses less digits than its factorization.

40144522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79373.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40144522 is about 6335.9704860424. The cubic root of 40144522 is about 342.4065761849.

Adding to 40144522 its reverse (22544104), we get a palindrome (62688626).

The spelling of 40144522 in words is "forty million, one hundred forty-four thousand, five hundred twenty-two".