51161837 has 2 divisors, whose sum is σ = 51161838. Its totient is φ = 51161836.

The previous prime is 51161807. The next prime is 51161839. The reversal of 51161837 is 73816115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27678121 + 23483716 = 5261^2 + 4846^2 .

It is a cyclic number.

It is not a de Polignac number, because 51161837 - 2¹⁴ = 51145453 is a prime.

Together with 51161839, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3066566 and since 51161837 and 3066566 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51161839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25580918 + 25580919.

It is an arithmetic number, because the mean of its divisors is an integer number (25580919).

Almost surely, 2^51161837 is an apocalyptic number.

It is an amenable number.

51161837 is a deficient number, since it is larger than the sum of its proper divisors (1).

51161837 is an equidigital number, since it uses as much as digits as its factorization.

51161837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 32.

The square root of 51161837 is about 7152.7503101954. The cubic root of 51161837 is about 371.2348249266.

The spelling of 51161837 in words is "fifty-one million, one hundred sixty-one thousand, eight hundred thirty-seven".