40251115 has 16 divisors (see below), whose sum is σ = 49530528. Its totient is φ = 31389696.

The previous prime is 40251103. The next prime is 40251131. The reversal of 40251115 is 51115204.

It is a cyclic number.

It is not a de Polignac number, because 40251115 - 2²³ = 31862507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40251092 and 40251101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50752 + ... + 51538.

It is an arithmetic number, because the mean of its divisors is an integer number (3095658).

Almost surely, 2^40251115 is an apocalyptic number.

40251115 is a deficient number, since it is larger than the sum of its proper divisors (9279413).

40251115 is a wasteful number, since it uses less digits than its factorization.

40251115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 40251115 is about 6344.3766439265. The cubic root of 40251115 is about 342.7093645959.

Adding to 40251115 its reverse (51115204), we get a palindrome (91366319).

The spelling of 40251115 in words is "forty million, two hundred fifty-one thousand, one hundred fifteen".