520723245 has 48 divisors (see below), whose sum is σ = 973764288. Its totient is φ = 236920320.

The previous prime is 520723171. The next prime is 520723261. The reversal of 520723245 is 542327025.

It is not a de Polignac number, because 520723245 - 2¹³ = 520715053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165285 + ... + 168405.

It is an arithmetic number, because the mean of its divisors is an integer number (20286756).

Almost surely, 2^520723245 is an apocalyptic number.

It is an amenable number.

520723245 is a deficient number, since it is larger than the sum of its proper divisors (453041043).

520723245 is a wasteful number, since it uses less digits than its factorization.

520723245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370 (or 3363 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 520723245 is about 22819.3611873777. The cubic root of 520723245 is about 804.5177956477.

The spelling of 520723245 in words is "five hundred twenty million, seven hundred twenty-three thousand, two hundred forty-five".