521245353 has 16 divisors (see below), whose sum is σ = 708341760. Its totient is φ = 340849296.

The previous prime is 521245349. The next prime is 521245357. The reversal of 521245353 is 353542125.

It is an interprime number because it is at equal distance from previous prime (521245349) and next prime (521245357).

It is not a de Polignac number, because 521245353 - 2² = 521245349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 521245353.

It is not an unprimeable number, because it can be changed into a prime (521245357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83176 + ... + 89222.

It is an arithmetic number, because the mean of its divisors is an integer number (44271360).

Almost surely, 2^521245353 is an apocalyptic number.

It is an amenable number.

521245353 is a deficient number, since it is larger than the sum of its proper divisors (187096407).

521245353 is a wasteful number, since it uses less digits than its factorization.

521245353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6596.

The product of its digits is 18000, while the sum is 30.

The square root of 521245353 is about 22830.7983434658. The cubic root of 521245353 is about 804.7865915785.

Adding to 521245353 its reverse (353542125), we get a palindrome (874787478).

The spelling of 521245353 in words is "five hundred twenty-one million, two hundred forty-five thousand, three hundred fifty-three".