51437 has 2 divisors, whose sum is σ = 51438. Its totient is φ = 51436.

The previous prime is 51431. The next prime is 51439. The reversal of 51437 is 73415.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51076 + 361 = 226^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 51437 - 2⁴ = 51421 is a prime.

Together with 51439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 51437.

It is not a weakly prime, because it can be changed into another prime (51431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25718 + 25719.

It is an arithmetic number, because the mean of its divisors is an integer number (25719).

2⁵¹⁴³⁷ is an apocalyptic number.

It is an amenable number.

51437 is a deficient number, since it is larger than the sum of its proper divisors (1).

51437 is an equidigital number, since it uses as much as digits as its factorization.

51437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420, while the sum is 20.

The square root of 51437 is about 226.7972662975. The cubic root of 51437 is about 37.1899171039.

The spelling of 51437 in words is "fifty-one thousand, four hundred thirty-seven".