40021522 has 8 divisors (see below), whose sum is σ = 60060672. Its totient is φ = 20001300.

The previous prime is 40021517. The next prime is 40021547. The reversal of 40021522 is 22512004.

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 = 40021496 and 40021505.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3247 + ... + 9517.

It is an arithmetic number, because the mean of its divisors is an integer number (7507584).

Almost surely, 2^40021522 is an apocalyptic number.

40021522 is a deficient number, since it is larger than the sum of its proper divisors (20039150).

40021522 is a wasteful number, since it uses less digits than its factorization.

40021522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40021522 is about 6326.2565550253. The cubic root of 40021522 is about 342.0565151751.

Adding to 40021522 its reverse (22512004), we get a palindrome (62533526).

The spelling of 40021522 in words is "forty million, twenty-one thousand, five hundred twenty-two".