520052537457 has 48 divisors (see below), whose sum is σ = 794186731520. Its totient is φ = 339993154512.

The previous prime is 520052537429. The next prime is 520052537467. The reversal of 520052537457 is 754735250025.

520052537457 is a `hidden beast` number, since 5 + 2 + 0 + 0 + 525 + 3 + 74 + 57 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-520052537457 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520052537467) 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, 3559044 + ... + 3702282.

Almost surely, 2^520052537457 is an apocalyptic number.

It is an amenable number.

520052537457 is a deficient number, since it is larger than the sum of its proper divisors (274134194063).

520052537457 is a wasteful number, since it uses less digits than its factorization.

520052537457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143544 (or 143532 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 45.

The spelling of 520052537457 in words is "five hundred twenty billion, fifty-two million, five hundred thirty-seven thousand, four hundred fifty-seven".