51026137 has 2 divisors, whose sum is σ = 51026138. Its totient is φ = 51026136.

The previous prime is 51026123. The next prime is 51026141. The reversal of 51026137 is 73162015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48149721 + 2876416 = 6939^2 + 1696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51026137 is a prime.

It is not a weakly prime, because it can be changed into another prime (51026147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25513068 + 25513069.

It is an arithmetic number, because the mean of its divisors is an integer number (25513069).

Almost surely, 2^51026137 is an apocalyptic number.

It is an amenable number.

51026137 is a deficient number, since it is larger than the sum of its proper divisors (1).

51026137 is an equidigital number, since it uses as much as digits as its factorization.

51026137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 51026137 is about 7143.2581501721. The cubic root of 51026137 is about 370.9063172374.

The spelling of 51026137 in words is "fifty-one million, twenty-six thousand, one hundred thirty-seven".