520771423 has 4 divisors (see below), whose sum is σ = 524518120. Its totient is φ = 517024728.

The previous prime is 520771403. The next prime is 520771477. The reversal of 520771423 is 324177025.

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

It is a cyclic number.

It is not a de Polignac number, because 520771423 - 2¹³ = 520763231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520771403) 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, 1873140 + ... + 1873417.

It is an arithmetic number, because the mean of its divisors is an integer number (131129530).

Almost surely, 2^520771423 is an apocalyptic number.

520771423 is a deficient number, since it is larger than the sum of its proper divisors (3746697).

520771423 is a wasteful number, since it uses less digits than its factorization.

520771423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746696.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 520771423 is about 22820.4168016274. The cubic root of 520771423 is about 804.5426065643.

The spelling of 520771423 in words is "five hundred twenty million, seven hundred seventy-one thousand, four hundred twenty-three".