520045406 has 4 divisors (see below), whose sum is σ = 780068112. Its totient is φ = 260022702.

The previous prime is 520045391. The next prime is 520045451. The reversal of 520045406 is 604540025.

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

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, 130011350 + ... + 130011353.

It is an arithmetic number, because the mean of its divisors is an integer number (195017028).

Almost surely, 2^520045406 is an apocalyptic number.

520045406 is a deficient number, since it is larger than the sum of its proper divisors (260022706).

520045406 is a wasteful number, since it uses less digits than its factorization.

520045406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260022705.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 520045406 is about 22804.5040726607. The cubic root of 520045406 is about 804.1685568153.

The spelling of 520045406 in words is "five hundred twenty million, forty-five thousand, four hundred six".