520125497 has 4 divisors (see below), whose sum is σ = 520380900. Its totient is φ = 519870096.

The previous prime is 520125461. The next prime is 520125509. The reversal of 520125497 is 794521025.

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 316092841 + 204032656 = 17779^2 + 14284^2 .

It is a cyclic number.

It is not a de Polignac number, because 520125497 - 2¹² = 520121401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520125797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124622 + ... + 128727.

It is an arithmetic number, because the mean of its divisors is an integer number (130095225).

Almost surely, 2^520125497 is an apocalyptic number.

It is an amenable number.

520125497 is a deficient number, since it is larger than the sum of its proper divisors (255403).

520125497 is a wasteful number, since it uses less digits than its factorization.

520125497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255402.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 520125497 is about 22806.2600397347. The cubic root of 520125497 is about 804.2098374144.

The spelling of 520125497 in words is "five hundred twenty million, one hundred twenty-five thousand, four hundred ninety-seven".