520155423 has 6 divisors (see below), whose sum is σ = 751335624. Its totient is φ = 346770276.

The previous prime is 520155359. The next prime is 520155463. The reversal of 520155423 is 324551025.

It is a happy number.

It is not a de Polignac number, because 520155423 - 2⁶ = 520155359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520155463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28897515 + ... + 28897532.

It is an arithmetic number, because the mean of its divisors is an integer number (125222604).

Almost surely, 2^520155423 is an apocalyptic number.

520155423 is a deficient number, since it is larger than the sum of its proper divisors (231180201).

520155423 is a wasteful number, since it uses less digits than its factorization.

520155423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57795053 (or 57795050 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 520155423 is about 22806.9161220889. The cubic root of 520155423 is about 804.2252608216.

The spelling of 520155423 in words is "five hundred twenty million, one hundred fifty-five thousand, four hundred twenty-three".