52440523 has 4 divisors (see below), whose sum is σ = 52762408. Its totient is φ = 52118640.

The previous prime is 52440511. The next prime is 52440533. The reversal of 52440523 is 32504425.

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-52440523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52440503) 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, 160698 + ... + 161023.

It is an arithmetic number, because the mean of its divisors is an integer number (13190602).

Almost surely, 2^52440523 is an apocalyptic number.

52440523 is a deficient number, since it is larger than the sum of its proper divisors (321885).

52440523 is a wasteful number, since it uses less digits than its factorization.

52440523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321884.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 52440523 is about 7241.5829070722. The cubic root of 52440523 is about 374.3021641317.

Adding to 52440523 its reverse (32504425), we get a palindrome (84944948).

The spelling of 52440523 in words is "fifty-two million, four hundred forty thousand, five hundred twenty-three".