47838515 has 4 divisors (see below), whose sum is σ = 57406224. Its totient is φ = 38270808.

The previous prime is 47838509. The next prime is 47838541. The reversal of 47838515 is 51583874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51583874 = 2 ⋅25791937.

It is a cyclic number.

It is not a de Polignac number, because 47838515 - 2⁴ = 47838499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4783847 + ... + 4783856.

It is an arithmetic number, because the mean of its divisors is an integer number (14351556).

Almost surely, 2^47838515 is an apocalyptic number.

47838515 is a deficient number, since it is larger than the sum of its proper divisors (9567709).

47838515 is an equidigital number, since it uses as much as digits as its factorization.

47838515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9567708.

The product of its digits is 134400, while the sum is 41.

The square root of 47838515 is about 6916.5392357739. The cubic root of 47838515 is about 363.0161082840.

The spelling of 47838515 in words is "forty-seven million, eight hundred thirty-eight thousand, five hundred fifteen".