47111523 has 4 divisors (see below), whose sum is σ = 62815368. Its totient is φ = 31407680.

The previous prime is 47111509. The next prime is 47111543. The reversal of 47111523 is 32511174.

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 47111523 - 2¹⁸ = 46849379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47111493 and 47111502.

It is not an unprimeable number, because it can be changed into a prime (47111503) 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, 7851918 + ... + 7851923.

It is an arithmetic number, because the mean of its divisors is an integer number (15703842).

Almost surely, 2^47111523 is an apocalyptic number.

47111523 is a deficient number, since it is larger than the sum of its proper divisors (15703845).

47111523 is a wasteful number, since it uses less digits than its factorization.

47111523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15703844.

The product of its digits is 840, while the sum is 24.

The square root of 47111523 is about 6863.7834318982. The cubic root of 47111523 is about 361.1678202133.

Adding to 47111523 its reverse (32511174), we get a palindrome (79622697).

The spelling of 47111523 in words is "forty-seven million, one hundred eleven thousand, five hundred twenty-three".