53430665 has 8 divisors (see below), whose sum is σ = 64323528. Its totient is φ = 42606720.

The previous prime is 53430661. The next prime is 53430697. The reversal of 53430665 is 56603435.

53430665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38416 + 53392249 = 196^2 + 7307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53430665 - 2² = 53430661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53430661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15506 + ... + 18635.

It is an arithmetic number, because the mean of its divisors is an integer number (8040441).

Almost surely, 2^53430665 is an apocalyptic number.

It is an amenable number.

53430665 is a deficient number, since it is larger than the sum of its proper divisors (10892863).

53430665 is a wasteful number, since it uses less digits than its factorization.

53430665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34459.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 53430665 is about 7309.6282395208. The cubic root of 53430665 is about 376.6432539115.

The spelling of 53430665 in words is "fifty-three million, four hundred thirty thousand, six hundred sixty-five".