521214460 has 48 divisors (see below), whose sum is σ = 1240797600. Its totient is φ = 182317824.

The previous prime is 521214457. The next prime is 521214493. The reversal of 521214460 is 64412125.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47815 + ... + 57694.

It is an arithmetic number, because the mean of its divisors is an integer number (25849950).

Almost surely, 2^521214460 is an apocalyptic number.

It is an amenable number.

521214460 is an abundant number, since it is smaller than the sum of its proper divisors (719583140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521214460 is a wasteful number, since it uses less digits than its factorization.

521214460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105550 (or 105548 counting only the distinct ones).

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

The square root of 521214460 is about 22830.1217692767. The cubic root of 521214460 is about 804.7706919878.

Adding to 521214460 its reverse (64412125), we get a palindrome (585626585).

The spelling of 521214460 in words is "five hundred twenty-one million, two hundred fourteen thousand, four hundred sixty".