51675251 has 2 divisors, whose sum is σ = 51675252. Its totient is φ = 51675250.

The previous prime is 51675229. The next prime is 51675259. The reversal of 51675251 is 15257615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51675251 is a prime.

It is not a weakly prime, because it can be changed into another prime (51675259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25837625 + 25837626.

It is an arithmetic number, because the mean of its divisors is an integer number (25837626).

Almost surely, 2^51675251 is an apocalyptic number.

51675251 is a deficient number, since it is larger than the sum of its proper divisors (1).

51675251 is an equidigital number, since it uses as much as digits as its factorization.

51675251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10500, while the sum is 32.

The square root of 51675251 is about 7188.5499928706. The cubic root of 51675251 is about 372.4724865945.

The spelling of 51675251 in words is "fifty-one million, six hundred seventy-five thousand, two hundred fifty-one".