40515019 has 4 divisors (see below), whose sum is σ = 40530600. Its totient is φ = 40499440.

The previous prime is 40514993. The next prime is 40515023. The reversal of 40515019 is 91051504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40515019 - 2¹⁷ = 40383947 is a prime.

It is a super-2 number, since 2×40515019² = 3282933529140722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40514984 and 40515002.

It is not an unprimeable number, because it can be changed into a prime (40515119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2842 + ... + 9439.

It is an arithmetic number, because the mean of its divisors is an integer number (10132650).

Almost surely, 2^40515019 is an apocalyptic number.

40515019 is a deficient number, since it is larger than the sum of its proper divisors (15581).

40515019 is a wasteful number, since it uses less digits than its factorization.

40515019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15580.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 40515019 is about 6365.1409253841. The cubic root of 40515019 is about 343.4567180461.

The spelling of 40515019 in words is "forty million, five hundred fifteen thousand, nineteen".