51641437 has 2 divisors, whose sum is σ = 51641438. Its totient is φ = 51641436.

The previous prime is 51641347. The next prime is 51641479. The reversal of 51641437 is 73414615.

Together with previous prime (51641347) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33570436 + 18071001 = 5794^2 + 4251^2 .

It is a cyclic number.

It is not a de Polignac number, because 51641437 - 2¹¹ = 51639389 is a prime.

It is equal to p_3093619 and since 51641437 and 3093619 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 51641399 and 51641408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51641137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25820718 + 25820719.

It is an arithmetic number, because the mean of its divisors is an integer number (25820719).

Almost surely, 2^51641437 is an apocalyptic number.

It is an amenable number.

51641437 is a deficient number, since it is larger than the sum of its proper divisors (1).

51641437 is an equidigital number, since it uses as much as digits as its factorization.

51641437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 51641437 is about 7186.1976733179. The cubic root of 51641437 is about 372.3912256906.

The spelling of 51641437 in words is "fifty-one million, six hundred forty-one thousand, four hundred thirty-seven".