53330981 has 8 divisors (see below), whose sum is σ = 58381344. Its totient is φ = 48314320.

The previous prime is 53330969. The next prime is 53330987. The reversal of 53330981 is 18903335.

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

It is a cyclic number.

It is not a de Polignac number, because 53330981 - 2⁶ = 53330917 is a prime.

It is a super-2 number, since 2×53330981² = 5688387068844722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53330987) 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, 5051 + ... + 11496.

It is an arithmetic number, because the mean of its divisors is an integer number (7297668).

Almost surely, 2^53330981 is an apocalyptic number.

It is an amenable number.

53330981 is a deficient number, since it is larger than the sum of its proper divisors (5050363).

53330981 is a wasteful number, since it uses less digits than its factorization.

53330981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16851.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 53330981 is about 7302.8063783726. The cubic root of 53330981 is about 376.4088773950.

The spelling of 53330981 in words is "fifty-three million, three hundred thirty thousand, nine hundred eighty-one".