535616321 has 4 divisors (see below), whose sum is σ = 536223792. Its totient is φ = 535008852.

The previous prime is 535616309. The next prime is 535616353. The reversal of 535616321 is 123616535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 535616321 - 2¹⁴ = 535599937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (535616381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302411 + ... + 304176.

It is an arithmetic number, because the mean of its divisors is an integer number (134055948).

Almost surely, 2^535616321 is an apocalyptic number.

It is an amenable number.

535616321 is a deficient number, since it is larger than the sum of its proper divisors (607471).

535616321 is an equidigital number, since it uses as much as digits as its factorization.

535616321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607470.

The product of its digits is 16200, while the sum is 32.

The square root of 535616321 is about 23143.3861178523. The cubic root of 535616321 is about 812.1157515955.

The spelling of 535616321 in words is "five hundred thirty-five million, six hundred sixteen thousand, three hundred twenty-one".