4971523 has 4 divisors (see below), whose sum is σ = 5020848. Its totient is φ = 4922200.

The previous prime is 4971493. The next prime is 4971529. The reversal of 4971523 is 3251794.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4971523 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4971529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24511 + ... + 24712.

It is an arithmetic number, because the mean of its divisors is an integer number (1255212).

Almost surely, 2^4971523 is an apocalyptic number.

4971523 is a deficient number, since it is larger than the sum of its proper divisors (49325).

4971523 is a wasteful number, since it uses less digits than its factorization.

4971523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49324.

The product of its digits is 7560, while the sum is 31.

The square root of 4971523 is about 2229.6912342295. The cubic root of 4971523 is about 170.6723431712.

The spelling of 4971523 in words is "four million, nine hundred seventy-one thousand, five hundred twenty-three".