51453 has 6 divisors (see below), whose sum is σ = 74334. Its totient is φ = 34296.

The previous prime is 51449. The next prime is 51461. The reversal of 51453 is 35415.

It can be written as a sum of positive squares in only one way, i.e., 45369 + 6084 = 213^2 + 78^2 .

It is not a de Polignac number, because 51453 - 2² = 51449 is a prime.

It is a super-2 number, since 2×51453² = 5294822418, which contains 22 as substring.

It is an Ulam number.

51453 is a lucky number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2850 + ... + 2867.

It is an arithmetic number, because the mean of its divisors is an integer number (12389).

2⁵¹⁴⁵³ is an apocalyptic number.

It is an amenable number.

51453 is a deficient number, since it is larger than the sum of its proper divisors (22881).

51453 is a wasteful number, since it uses less digits than its factorization.

51453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723 (or 5720 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 51453 is about 226.8325373486. The cubic root of 51453 is about 37.1937728043.

Adding to 51453 its reverse (35415), we get a palindrome (86868).

The spelling of 51453 in words is "fifty-one thousand, four hundred fifty-three".