520148401 has 2 divisors, whose sum is σ = 520148402. Its totient is φ = 520148400.

The previous prime is 520148399. The next prime is 520148423. The reversal of 520148401 is 104841025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 467208225 + 52940176 = 21615^2 + 7276^2 .

It is a cyclic number.

It is not a de Polignac number, because 520148401 - 2¹ = 520148399 is a prime.

Together with 520148399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (520148491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260074200 + 260074201.

It is an arithmetic number, because the mean of its divisors is an integer number (260074201).

Almost surely, 2^520148401 is an apocalyptic number.

It is an amenable number.

520148401 is a deficient number, since it is larger than the sum of its proper divisors (1).

520148401 is an equidigital number, since it uses as much as digits as its factorization.

520148401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 520148401 is about 22806.7621770386. The cubic root of 520148401 is about 804.2216418423.

Adding to 520148401 its reverse (104841025), we get a palindrome (624989426).

The spelling of 520148401 in words is "five hundred twenty million, one hundred forty-eight thousand, four hundred one".