520325545 has 48 divisors (see below), whose sum is σ = 721571328. Its totient is φ = 358525440.

The previous prime is 520325537. The next prime is 520325549. The reversal of 520325545 is 545523025.

It is a happy number.

It is not a de Polignac number, because 520325545 - 2³ = 520325537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520325549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 950962 + ... + 951508.

It is an arithmetic number, because the mean of its divisors is an integer number (15032736).

Almost surely, 2^520325545 is an apocalyptic number.

It is an amenable number.

520325545 is a deficient number, since it is larger than the sum of its proper divisors (201245783).

520325545 is a wasteful number, since it uses less digits than its factorization.

520325545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 520325545 is about 22810.6454314647. The cubic root of 520325545 is about 804.3129278860.

The spelling of 520325545 in words is "five hundred twenty million, three hundred twenty-five thousand, five hundred forty-five".