523840054 has 4 divisors (see below), whose sum is σ = 785760084. Its totient is φ = 261920026.

The previous prime is 523840039. The next prime is 523840063. The reversal of 523840054 is 450048325.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 523839998 and 523840025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130960012 + ... + 130960015.

It is an arithmetic number, because the mean of its divisors is an integer number (196440021).

Almost surely, 2^523840054 is an apocalyptic number.

523840054 is a deficient number, since it is larger than the sum of its proper divisors (261920030).

523840054 is a wasteful number, since it uses less digits than its factorization.

523840054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261920029.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 523840054 is about 22887.5523811525. The cubic root of 523840054 is about 806.1197610752.

Adding to 523840054 its reverse (450048325), we get a palindrome (973888379).

The spelling of 523840054 in words is "five hundred twenty-three million, eight hundred forty thousand, fifty-four".