53699321 has 8 divisors (see below), whose sum is σ = 59393544. Its totient is φ = 48228480.

The previous prime is 53699293. The next prime is 53699323. The reversal of 53699321 is 12399635.

It can be written as a sum of positive squares in 4 ways, for example, as 5812921 + 47886400 = 2411^2 + 6920^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53699321 is a prime.

It is a super-2 number, since 2×53699321² = 5767234151722082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53699323) 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, 55340 + ... + 56301.

It is an arithmetic number, because the mean of its divisors is an integer number (7424193).

Almost surely, 2^53699321 is an apocalyptic number.

It is an amenable number.

53699321 is a deficient number, since it is larger than the sum of its proper divisors (5694223).

53699321 is a wasteful number, since it uses less digits than its factorization.

53699321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111691.

The product of its digits is 43740, while the sum is 38.

The square root of 53699321 is about 7327.9820551090. The cubic root of 53699321 is about 377.2734684634.

The spelling of 53699321 in words is "fifty-three million, six hundred ninety-nine thousand, three hundred twenty-one".