55357 has 4 divisors (see below), whose sum is σ = 55836. Its totient is φ = 54880.

The previous prime is 55351. The next prime is 55373. The reversal of 55357 is 75355.

It is a happy number.

55357 is nontrivially palindromic in base 14.

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 can be written as a sum of positive squares in 2 ways, for example, as 47961 + 7396 = 219^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 55357 - 2⁷ = 55229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55351) 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, 57 + ... + 337.

It is an arithmetic number, because the mean of its divisors is an integer number (13959).

2⁵⁵³⁵⁷ is an apocalyptic number.

It is an amenable number.

55357 is a deficient number, since it is larger than the sum of its proper divisors (479).

55357 is a wasteful number, since it uses less digits than its factorization.

55357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478.

The product of its digits is 2625, while the sum is 25.

The square root of 55357 is about 235.2806834400. The cubic root of 55357 is about 38.1116292807. Note that the first 3 decimals are identical.

The spelling of 55357 in words is "fifty-five thousand, three hundred fifty-seven".