521341401 has 16 divisors (see below), whose sum is σ = 802141184. Its totient is φ = 295015824.

The previous prime is 521341393. The next prime is 521341421. The reversal of 521341401 is 104143125.

It is not a de Polignac number, because 521341401 - 2³ = 521341393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (521341421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118351 + ... + 122676.

It is an arithmetic number, because the mean of its divisors is an integer number (50133824).

Almost surely, 2^521341401 is an apocalyptic number.

It is an amenable number.

521341401 is a deficient number, since it is larger than the sum of its proper divisors (280799783).

521341401 is a wasteful number, since it uses less digits than its factorization.

521341401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241140.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 521341401 is about 22832.9017209815. The cubic root of 521341401 is about 804.8360202495.

Adding to 521341401 its reverse (104143125), we get a palindrome (625484526).

It can be divided in two parts, 52134 and 1401, that added together give a palindrome (53535).

The spelling of 521341401 in words is "five hundred twenty-one million, three hundred forty-one thousand, four hundred one".