51466 has 4 divisors (see below), whose sum is σ = 77202. Its totient is φ = 25732.

The previous prime is 51461. The next prime is 51473. The reversal of 51466 is 66415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50625 + 841 = 225^2 + 29^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51461) by changing a digit.

51466 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12865 + ... + 12868.

2⁵¹⁴⁶⁶ is an apocalyptic number.

51466 is a deficient number, since it is larger than the sum of its proper divisors (25736).

51466 is a wasteful number, since it uses less digits than its factorization.

51466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25735.

The product of its digits is 720, while the sum is 22.

The square root of 51466 is about 226.8611910398. The cubic root of 51466 is about 37.1969049724.

It can be divided in two parts, 5146 and 6, that multiplied together give a triangular number (30876 = T₂₄₈).

The spelling of 51466 in words is "fifty-one thousand, four hundred sixty-six".