40641515 has 8 divisors (see below), whose sum is σ = 49121520. Its totient is φ = 32278752.

The previous prime is 40641487. The next prime is 40641521. The reversal of 40641515 is 51514604.

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

It is a cyclic number.

It is not a de Polignac number, because 40641515 - 2¹⁸ = 40379371 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28544 + ... + 29933.

It is an arithmetic number, because the mean of its divisors is an integer number (6140190).

Almost surely, 2^40641515 is an apocalyptic number.

40641515 is a deficient number, since it is larger than the sum of its proper divisors (8480005).

40641515 is a wasteful number, since it uses less digits than its factorization.

40641515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58621.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 40641515 is about 6375.0698035394. The cubic root of 40641515 is about 343.8137935598.

The spelling of 40641515 in words is "forty million, six hundred forty-one thousand, five hundred fifteen".