53669329 has 4 divisors (see below), whose sum is σ = 61336384. Its totient is φ = 46002276.

The previous prime is 53669309. The next prime is 53669359. The reversal of 53669329 is 92396635.

53669329 is nontrivially palindromic in base 14.

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 53669329 - 2⁹ = 53668817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53669309) 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, 3833517 + ... + 3833530.

It is an arithmetic number, because the mean of its divisors is an integer number (15334096).

Almost surely, 2^53669329 is an apocalyptic number.

It is an amenable number.

53669329 is a deficient number, since it is larger than the sum of its proper divisors (7667055).

53669329 is an equidigital number, since it uses as much as digits as its factorization.

53669329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7667054.

The product of its digits is 262440, while the sum is 43.

The square root of 53669329 is about 7325.9353669003. The cubic root of 53669329 is about 377.2032174628.

The spelling of 53669329 in words is "fifty-three million, six hundred sixty-nine thousand, three hundred twenty-nine".