40251506 has 8 divisors (see below), whose sum is σ = 60404400. Its totient is φ = 20116708.

The previous prime is 40251493. The next prime is 40251517. The reversal of 40251506 is 60515204.

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

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, 5345 + ... + 10443.

It is an arithmetic number, because the mean of its divisors is an integer number (7550550).

Almost surely, 2^40251506 is an apocalyptic number.

40251506 is a deficient number, since it is larger than the sum of its proper divisors (20152894).

40251506 is a wasteful number, since it uses less digits than its factorization.

40251506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9048.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40251506 is about 6344.4074585417. The cubic root of 40251506 is about 342.7104742871.

The spelling of 40251506 in words is "forty million, two hundred fifty-one thousand, five hundred six".