40251015 has 24 divisors (see below), whose sum is σ = 79735968. Its totient is φ = 18400320.

The previous prime is 40251007. The next prime is 40251017. The reversal of 40251015 is 51015204.

40251015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40251015 - 2³ = 40251007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40251017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63576 + ... + 64205.

It is an arithmetic number, because the mean of its divisors is an integer number (3322332).

Almost surely, 2^40251015 is an apocalyptic number.

40251015 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40251015 is a deficient number, since it is larger than the sum of its proper divisors (39484953).

40251015 is a wasteful number, since it uses less digits than its factorization.

40251015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127799 (or 127796 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 40251015 is about 6344.3687629267. The cubic root of 40251015 is about 342.7090807862.

Adding to 40251015 its reverse (51015204), we get a palindrome (91266219).

The spelling of 40251015 in words is "forty million, two hundred fifty-one thousand, fifteen".