51361337 has 2 divisors, whose sum is σ = 51361338. Its totient is φ = 51361336.

The previous prime is 51361333. The next prime is 51361363. The reversal of 51361337 is 73316315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 609961 = 7124^2 + 781^2 .

It is a cyclic number.

It is not a de Polignac number, because 51361337 - 2² = 51361333 is a prime.

It is not a weakly prime, because it can be changed into another prime (51361333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25680668 + 25680669.

It is an arithmetic number, because the mean of its divisors is an integer number (25680669).

Almost surely, 2^51361337 is an apocalyptic number.

It is an amenable number.

51361337 is a deficient number, since it is larger than the sum of its proper divisors (1).

51361337 is an equidigital number, since it uses as much as digits as its factorization.

51361337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 29.

The square root of 51361337 is about 7166.6824263393. The cubic root of 51361337 is about 371.7167289863.

The spelling of 51361337 in words is "fifty-one million, three hundred sixty-one thousand, three hundred thirty-seven".