53990 has 8 divisors (see below), whose sum is σ = 97200. Its totient is φ = 21592.

The previous prime is 53987. The next prime is 53993. The reversal of 53990 is 9935.

It is an interprime number because it is at equal distance from previous prime (53987) and next prime (53993).

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53993) 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, 2690 + ... + 2709.

It is an arithmetic number, because the mean of its divisors is an integer number (12150).

2⁵³⁹⁹⁰ is an apocalyptic number.

53990 is a deficient number, since it is larger than the sum of its proper divisors (43210).

53990 is a wasteful number, since it uses less digits than its factorization.

53990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 53990 is about 232.3574832021. The cubic root of 53990 is about 37.7952981657.

The spelling of 53990 in words is "fifty-three thousand, nine hundred ninety".