53113321 has 4 divisors (see below), whose sum is σ = 56237652. Its totient is φ = 49988992.

The previous prime is 53113309. The next prime is 53113339. The reversal of 53113321 is 12331135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39237696 + 13875625 = 6264^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 53113321 - 2¹⁷ = 52982249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53113301) 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, 1562140 + ... + 1562173.

It is an arithmetic number, because the mean of its divisors is an integer number (14059413).

Almost surely, 2^53113321 is an apocalyptic number.

It is an amenable number.

53113321 is a deficient number, since it is larger than the sum of its proper divisors (3124331).

53113321 is a wasteful number, since it uses less digits than its factorization.

53113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124330.

The product of its digits is 270, while the sum is 19.

The square root of 53113321 is about 7287.8886517290. Note that the first 3 decimals coincide. The cubic root of 53113321 is about 375.8960993473.

Adding to 53113321 its reverse (12331135), we get a palindrome (65444456).

The spelling of 53113321 in words is "fifty-three million, one hundred thirteen thousand, three hundred twenty-one".