464214521 has 4 divisors (see below), whose sum is σ = 466207092. Its totient is φ = 462221952.

The previous prime is 464214481. The next prime is 464214523. The reversal of 464214521 is 125412464.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 311346025 + 152868496 = 17645^2 + 12364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-464214521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (464214523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995936 + ... + 996401.

It is an arithmetic number, because the mean of its divisors is an integer number (116551773).

Almost surely, 2^464214521 is an apocalyptic number.

It is an amenable number.

464214521 is a deficient number, since it is larger than the sum of its proper divisors (1992571).

464214521 is a wasteful number, since it uses less digits than its factorization.

464214521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992570.

The product of its digits is 7680, while the sum is 29.

The square root of 464214521 is about 21545.6380968399. The cubic root of 464214521 is about 774.2946178368.

Adding to 464214521 its reverse (125412464), we get a palindrome (589626985).

The spelling of 464214521 in words is "four hundred sixty-four million, two hundred fourteen thousand, five hundred twenty-one".