40251315 has 32 divisors (see below), whose sum is σ = 69866496. Its totient is φ = 19670400.

The previous prime is 40251313. The next prime is 40251319. The reversal of 40251315 is 51315204.

It is not a de Polignac number, because 40251315 - 2¹ = 40251313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40251291 and 40251300.

It is not an unprimeable number, because it can be changed into a prime (40251313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28762 + ... + 30128.

It is an arithmetic number, because the mean of its divisors is an integer number (2183328).

Almost surely, 2^40251315 is an apocalyptic number.

40251315 is a deficient number, since it is larger than the sum of its proper divisors (29615181).

40251315 is a wasteful number, since it uses less digits than its factorization.

40251315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40251315 is about 6344.3924058967. The cubic root of 40251315 is about 342.7099322137.

Adding to 40251315 its reverse (51315204), we get a palindrome (91566519).

The spelling of 40251315 in words is "forty million, two hundred fifty-one thousand, three hundred fifteen".