520845461 has 4 divisors (see below), whose sum is σ = 548258400. Its totient is φ = 493432524.

The previous prime is 520845407. The next prime is 520845467. The reversal of 520845461 is 164548025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520845461 - 2¹⁴ = 520829077 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 (520845467) 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, 13706441 + ... + 13706478.

It is an arithmetic number, because the mean of its divisors is an integer number (137064600).

Almost surely, 2^520845461 is an apocalyptic number.

It is an amenable number.

520845461 is a deficient number, since it is larger than the sum of its proper divisors (27412939).

520845461 is a wasteful number, since it uses less digits than its factorization.

520845461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27412938.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 520845461 is about 22822.0389316993. The cubic root of 520845461 is about 804.5807319940.

The spelling of 520845461 in words is "five hundred twenty million, eight hundred forty-five thousand, four hundred sixty-one".