53997 has 8 divisors (see below), whose sum is σ = 73920. Its totient is φ = 35040.

The previous prime is 53993. The next prime is 54001. The reversal of 53997 is 79935.

It is an interprime number because it is at equal distance from previous prime (53993) and next prime (54001).

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

It is not a de Polignac number, because 53997 - 2² = 53993 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 97 + ... + 342.

It is an arithmetic number, because the mean of its divisors is an integer number (9240).

2⁵³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

53997 is a deficient number, since it is larger than the sum of its proper divisors (19923).

53997 is a wasteful number, since it uses less digits than its factorization.

53997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483.

The product of its digits is 8505, while the sum is 33.

The square root of 53997 is about 232.3725457105. The cubic root of 53997 is about 37.7969315277.

It can be divided in two parts, 539 and 97, that added together give a palindrome (636).

The spelling of 53997 in words is "fifty-three thousand, nine hundred ninety-seven".