65316553 has 8 divisors (see below), whose sum is σ = 65939720. Its totient is φ = 64696320.

The previous prime is 65316551. The next prime is 65316569. The reversal of 65316553 is 35561356.

It can be written as a sum of positive squares in 4 ways, for example, as 2082249 + 63234304 = 1443^2 + 7952^2 .

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 65316553 - 2¹ = 65316551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65316551) 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, 84553 + ... + 85321.

It is an arithmetic number, because the mean of its divisors is an integer number (8242465).

Almost surely, 2^65316553 is an apocalyptic number.

It is an amenable number.

65316553 is a deficient number, since it is larger than the sum of its proper divisors (623167).

65316553 is a wasteful number, since it uses less digits than its factorization.

65316553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467.

The product of its digits is 40500, while the sum is 34.

The square root of 65316553 is about 8081.8656880698. The cubic root of 65316553 is about 402.7242231507.

The spelling of 65316553 in words is "sixty-five million, three hundred sixteen thousand, five hundred fifty-three".