51651337 has 2 divisors, whose sum is σ = 51651338. Its totient is φ = 51651336.

The previous prime is 51651289. The next prime is 51651377. The reversal of 51651337 is 73315615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49056016 + 2595321 = 7004^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 51651337 - 2⁷ = 51651209 is a prime.

It is a super-2 number, since 2×51651337² = 5335721227775138, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51651299 and 51651308.

It is not a weakly prime, because it can be changed into another prime (51651377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25825668 + 25825669.

It is an arithmetic number, because the mean of its divisors is an integer number (25825669).

Almost surely, 2^51651337 is an apocalyptic number.

It is an amenable number.

51651337 is a deficient number, since it is larger than the sum of its proper divisors (1).

51651337 is an equidigital number, since it uses as much as digits as its factorization.

51651337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 31.

The square root of 51651337 is about 7186.8864607701. The cubic root of 51651337 is about 372.4150207783.

The spelling of 51651337 in words is "fifty-one million, six hundred fifty-one thousand, three hundred thirty-seven".