47518493 has 4 divisors (see below), whose sum is σ = 51838368. Its totient is φ = 43198620.

The previous prime is 47518469. The next prime is 47518507. The reversal of 47518493 is 39481574.

47518493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47518493 - 2¹⁶ = 47452957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47518493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47518453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2159921 + ... + 2159942.

It is an arithmetic number, because the mean of its divisors is an integer number (12959592).

Almost surely, 2^47518493 is an apocalyptic number.

It is an amenable number.

47518493 is a deficient number, since it is larger than the sum of its proper divisors (4319875).

47518493 is a wasteful number, since it uses less digits than its factorization.

47518493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319874.

The product of its digits is 120960, while the sum is 41.

The square root of 47518493 is about 6893.3658687175. The cubic root of 47518493 is about 362.2048152643.

The spelling of 47518493 in words is "forty-seven million, five hundred eighteen thousand, four hundred ninety-three".