520345401 has 8 divisors (see below), whose sum is σ = 734605344. Its totient is φ = 326491200.

The previous prime is 520345373. The next prime is 520345409. The reversal of 520345401 is 104543025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520345401 - 2⁵ = 520345369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520345409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5101375 + ... + 5101476.

It is an arithmetic number, because the mean of its divisors is an integer number (91825668).

Almost surely, 2^520345401 is an apocalyptic number.

520345401 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

520345401 is a deficient number, since it is larger than the sum of its proper divisors (214259943).

520345401 is a wasteful number, since it uses less digits than its factorization.

520345401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10202871.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 520345401 is about 22811.0806626955. The cubic root of 520345401 is about 804.3231588106.

Adding to 520345401 its reverse (104543025), we get a palindrome (624888426).

The spelling of 520345401 in words is "five hundred twenty million, three hundred forty-five thousand, four hundred one".