520132397 has 2 divisors, whose sum is σ = 520132398. Its totient is φ = 520132396.

The previous prime is 520132369. The next prime is 520132411. The reversal of 520132397 is 793231025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515925796 + 4206601 = 22714^2 + 2051^2 .

It is a cyclic number.

It is not a de Polignac number, because 520132397 - 2¹⁶ = 520066861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520132367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260066198 + 260066199.

It is an arithmetic number, because the mean of its divisors is an integer number (260066199).

Almost surely, 2^520132397 is an apocalyptic number.

It is an amenable number.

520132397 is a deficient number, since it is larger than the sum of its proper divisors (1).

520132397 is an equidigital number, since it uses as much as digits as its factorization.

520132397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 520132397 is about 22806.4113134881. The cubic root of 520132397 is about 804.2133936224.

The spelling of 520132397 in words is "five hundred twenty million, one hundred thirty-two thousand, three hundred ninety-seven".