520045045 has 32 divisors (see below), whose sum is σ = 714534912. Its totient is φ = 359949312.

The previous prime is 520045021. The next prime is 520045087. The reversal of 520045045 is 540540025.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520045045 is a prime.

520045045 is a modest number, since divided by 45045 gives 520 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311884 + ... + 313546.

It is an arithmetic number, because the mean of its divisors is an integer number (22329216).

Almost surely, 2^520045045 is an apocalyptic number.

It is an amenable number.

520045045 is a deficient number, since it is larger than the sum of its proper divisors (194489867).

520045045 is a wasteful number, since it uses less digits than its factorization.

520045045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 520045045 is about 22804.4961575563. The cubic root of 520045045 is about 804.1683707386.

The spelling of 520045045 in words is "five hundred twenty million, forty-five thousand, forty-five".