51554 has 8 divisors (see below), whose sum is σ = 78300. Its totient is φ = 25456.

The previous prime is 51551. The next prime is 51563. The reversal of 51554 is 45515.

It can be written as a sum of positive squares in 2 ways, for example, as 51529 + 25 = 227^2 + 5^2 .

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

It is a nialpdrome in base 9 and base 16.

It is not an unprimeable number, because it can be changed into a prime (51551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212 + ... + 384.

2⁵¹⁵⁵⁴ is an apocalyptic number.

51554 is a deficient number, since it is larger than the sum of its proper divisors (26746).

51554 is a wasteful number, since it uses less digits than its factorization.

51554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324.

The product of its digits is 500, while the sum is 20.

The square root of 51554 is about 227.0550594019. The cubic root of 51554 is about 37.2180934836.

The spelling of 51554 in words is "fifty-one thousand, five hundred fifty-four".