51150709 has 2 divisors, whose sum is σ = 51150710. Its totient is φ = 51150708.

The previous prime is 51150691. The next prime is 51150721. The reversal of 51150709 is 90705115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42536484 + 8614225 = 6522^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 51150709 - 2⁵ = 51150677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51150769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25575354 + 25575355.

It is an arithmetic number, because the mean of its divisors is an integer number (25575355).

Almost surely, 2^51150709 is an apocalyptic number.

It is an amenable number.

51150709 is a deficient number, since it is larger than the sum of its proper divisors (1).

51150709 is an equidigital number, since it uses as much as digits as its factorization.

51150709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 51150709 is about 7151.9723852934. The cubic root of 51150709 is about 371.2079077235.

The spelling of 51150709 in words is "fifty-one million, one hundred fifty thousand, seven hundred nine".