51696049 has 2 divisors, whose sum is σ = 51696050. Its totient is φ = 51696048.

The previous prime is 51695989. The next prime is 51696077. The reversal of 51696049 is 94069615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51624225 + 71824 = 7185^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 51696049 - 2¹⁵ = 51663281 is a prime.

It is not a weakly prime, because it can be changed into another prime (51696089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25848024 + 25848025.

It is an arithmetic number, because the mean of its divisors is an integer number (25848025).

Almost surely, 2^51696049 is an apocalyptic number.

It is an amenable number.

51696049 is a deficient number, since it is larger than the sum of its proper divisors (1).

51696049 is an equidigital number, since it uses as much as digits as its factorization.

51696049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 51696049 is about 7189.9964534066. The cubic root of 51696049 is about 372.5224501881.

The spelling of 51696049 in words is "fifty-one million, six hundred ninety-six thousand, forty-nine".