52561423 has 8 divisors (see below), whose sum is σ = 54111392. Its totient is φ = 51018336.

The previous prime is 52561409. The next prime is 52561441. The reversal of 52561423 is 32416525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 7-Lehmer number, since φ(52561423) divides (52561423-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 52561423 - 2¹³ = 52553231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52561391 and 52561400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52561403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16561 + ... + 19477.

It is an arithmetic number, because the mean of its divisors is an integer number (6763924).

Almost surely, 2^52561423 is an apocalyptic number.

52561423 is a deficient number, since it is larger than the sum of its proper divisors (1549969).

52561423 is a wasteful number, since it uses less digits than its factorization.

52561423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441.

The product of its digits is 7200, while the sum is 28.

The square root of 52561423 is about 7249.9257237575. The cubic root of 52561423 is about 374.5895907055.

Adding to 52561423 its reverse (32416525), we get a palindrome (84977948).

The spelling of 52561423 in words is "fifty-two million, five hundred sixty-one thousand, four hundred twenty-three".