506521420 has 24 divisors (see below), whose sum is σ = 1064123424. Its totient is φ = 202526976.

The previous prime is 506521373. The next prime is 506521423. The reversal of 506521420 is 24125605.

It is not an unprimeable number, because it can be changed into a prime (506521423) 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, 82497 + ... + 88423.

It is an arithmetic number, because the mean of its divisors is an integer number (44338476).

Almost surely, 2^506521420 is an apocalyptic number.

It is an amenable number.

506521420 is an abundant number, since it is smaller than the sum of its proper divisors (557602004).

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

506521420 is a wasteful number, since it uses less digits than its factorization.

506521420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10209 (or 10207 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 506521420 is about 22506.0307473353. The cubic root of 506521420 is about 797.1363344221.

The spelling of 506521420 in words is "five hundred six million, five hundred twenty-one thousand, four hundred twenty".