53330639 has 4 divisors (see below), whose sum is σ = 53345424. Its totient is φ = 53315856.

The previous prime is 53330617. The next prime is 53330657. The reversal of 53330639 is 93603335.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53330639 - 2¹⁶ = 53265103 is a prime.

It is a super-2 number, since 2×53330639² = 5688314112296642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53330659) 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, 1979 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (13336356).

Almost surely, 2^53330639 is an apocalyptic number.

53330639 is a deficient number, since it is larger than the sum of its proper divisors (14785).

53330639 is an equidigital number, since it uses as much as digits as its factorization.

53330639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14784.

The product of its (nonzero) digits is 21870, while the sum is 32.

The square root of 53330639 is about 7302.7829626794. The cubic root of 53330639 is about 376.4080727838.

The spelling of 53330639 in words is "fifty-three million, three hundred thirty thousand, six hundred thirty-nine".