53330121 has 24 divisors (see below), whose sum is σ = 83797896. Its totient is φ = 32486400.

The previous prime is 53330117. The next prime is 53330129. The reversal of 53330121 is 12103335.

53330121 = 410² + 411² + ... + 611².

It can be written as a sum of positive squares in 4 ways, for example, as 622521 + 52707600 = 789^2 + 7260^2 .

It is not a de Polignac number, because 53330121 - 2² = 53330117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53330094 and 53330103.

It is not an unprimeable number, because it can be changed into a prime (53330129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9561 + ... + 14073.

It is an arithmetic number, because the mean of its divisors is an integer number (3491579).

Almost surely, 2^53330121 is an apocalyptic number.

It is an amenable number.

53330121 is a deficient number, since it is larger than the sum of its proper divisors (30467775).

53330121 is a wasteful number, since it uses less digits than its factorization.

53330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633 (or 4630 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 53330121 is about 7302.7474966618. The cubic root of 53330121 is about 376.4068540972.

Adding to 53330121 its reverse (12103335), we get a palindrome (65433456).

The spelling of 53330121 in words is "fifty-three million, three hundred thirty thousand, one hundred twenty-one".