40057515 has 24 divisors (see below), whose sum is σ = 69834960. Its totient is φ = 21240384.

The previous prime is 40057481. The next prime is 40057531. The reversal of 40057515 is 51575004.

It is not a de Polignac number, because 40057515 - 2¹⁰ = 40056491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5569 + ... + 10541.

It is an arithmetic number, because the mean of its divisors is an integer number (2909790).

Almost surely, 2^40057515 is an apocalyptic number.

40057515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40057515 is a deficient number, since it is larger than the sum of its proper divisors (29777445).

40057515 is a wasteful number, since it uses less digits than its factorization.

40057515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5163 (or 5160 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 40057515 is about 6329.1006470114. The cubic root of 40057515 is about 342.1590262790.

The spelling of 40057515 in words is "forty million, fifty-seven thousand, five hundred fifteen".