520292137 has 4 divisors (see below), whose sum is σ = 523299780. Its totient is φ = 517284496.

The previous prime is 520292099. The next prime is 520292197. The reversal of 520292137 is 731292025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 255872016 + 264420121 = 15996^2 + 16261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520292137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520292099 and 520292108.

It is not an unprimeable number, because it can be changed into a prime (520292197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503562 + ... + 1503907.

It is an arithmetic number, because the mean of its divisors is an integer number (130824945).

Almost surely, 2^520292137 is an apocalyptic number.

It is an amenable number.

520292137 is a deficient number, since it is larger than the sum of its proper divisors (3007643).

520292137 is a wasteful number, since it uses less digits than its factorization.

520292137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007642.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 520292137 is about 22809.9131300406. The cubic root of 520292137 is about 804.2957136236.

The spelling of 520292137 in words is "five hundred twenty million, two hundred ninety-two thousand, one hundred thirty-seven".