521245463 has 8 divisors (see below), whose sum is σ = 536405760. Its totient is φ = 506254840.

The previous prime is 521245457. The next prime is 521245489. The reversal of 521245463 is 364542125.

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 521245463 - 2¹⁶ = 521179927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521245433) 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, 36173 + ... + 48486.

It is an arithmetic number, because the mean of its divisors is an integer number (67050720).

Almost surely, 2^521245463 is an apocalyptic number.

521245463 is a deficient number, since it is larger than the sum of its proper divisors (15160297).

521245463 is a wasteful number, since it uses less digits than its factorization.

521245463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84837.

The product of its digits is 28800, while the sum is 32.

The square root of 521245463 is about 22830.8007524922. The cubic root of 521245463 is about 804.7866481907.

Adding to 521245463 its reverse (364542125), we get a palindrome (885787588).

The spelling of 521245463 in words is "five hundred twenty-one million, two hundred forty-five thousand, four hundred sixty-three".