40451015 has 8 divisors (see below), whose sum is σ = 52954128. Its totient is φ = 29418880.

The previous prime is 40451009. The next prime is 40451017. The reversal of 40451015 is 51015404.

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

It is not a de Polignac number, because 40451015 - 2¹⁴ = 40434631 is a prime.

It is a super-2 number, since 2×40451015² = 3272569229060450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40451017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367682 + ... + 367791.

It is an arithmetic number, because the mean of its divisors is an integer number (6619266).

Almost surely, 2^40451015 is an apocalyptic number.

40451015 is a deficient number, since it is larger than the sum of its proper divisors (12503113).

40451015 is a wasteful number, since it uses less digits than its factorization.

40451015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735489.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 40451015 is about 6360.1112411655. Note that the first 3 decimals coincide. The cubic root of 40451015 is about 343.2757630139.

Adding to 40451015 its reverse (51015404), we get a palindrome (91466419).

The spelling of 40451015 in words is "forty million, four hundred fifty-one thousand, fifteen".