40054815 has 12 divisors (see below), whose sum is σ = 69428424. Its totient is φ = 21362544.

The previous prime is 40054789. The next prime is 40054823. The reversal of 40054815 is 51845004.

It is not a de Polignac number, because 40054815 - 2⁸ = 40054559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445009 + ... + 445098.

It is an arithmetic number, because the mean of its divisors is an integer number (5785702).

Almost surely, 2^40054815 is an apocalyptic number.

40054815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40054815 is a deficient number, since it is larger than the sum of its proper divisors (29373609).

40054815 is a wasteful number, since it uses less digits than its factorization.

40054815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890118 (or 890115 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 40054815 is about 6328.8873429695. The cubic root of 40054815 is about 342.1513385819.

Adding to 40054815 its reverse (51845004), we get a palindrome (91899819).

The spelling of 40054815 in words is "forty million, fifty-four thousand, eight hundred fifteen".