521414431 has 8 divisors (see below), whose sum is σ = 538266960. Its totient is φ = 504776832.

The previous prime is 521414423. The next prime is 521414441. The reversal of 521414431 is 134414125.

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

It is a cyclic number.

It is not a de Polignac number, because 521414431 - 2³ = 521414423 is a prime.

It is a super-2 number, since 2×521414431² = 543746017710107522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521414396 and 521414405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521414441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48796 + ... + 58513.

It is an arithmetic number, because the mean of its divisors is an integer number (67283370).

Almost surely, 2^521414431 is an apocalyptic number.

521414431 is a deficient number, since it is larger than the sum of its proper divisors (16852529).

521414431 is a wasteful number, since it uses less digits than its factorization.

521414431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107465.

The product of its digits is 1920, while the sum is 25.

The square root of 521414431 is about 22834.5008922902. The cubic root of 521414431 is about 804.8735992270.

Adding to 521414431 its reverse (134414125), we get a palindrome (655828556).

The spelling of 521414431 in words is "five hundred twenty-one million, four hundred fourteen thousand, four hundred thirty-one".