51329251 has 2 divisors, whose sum is σ = 51329252. Its totient is φ = 51329250.

The previous prime is 51329219. The next prime is 51329263. The reversal of 51329251 is 15292315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51329251 - 2⁵ = 51329219 is a prime.

It is a super-4 number, since 4×51329251⁴ (a number of 32 digits) contains 4444 as substring.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (51329651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25664625 + 25664626.

It is an arithmetic number, because the mean of its divisors is an integer number (25664626).

Almost surely, 2^51329251 is an apocalyptic number.

51329251 is a deficient number, since it is larger than the sum of its proper divisors (1).

51329251 is an equidigital number, since it uses as much as digits as its factorization.

51329251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 51329251 is about 7164.4435234008. The cubic root of 51329251 is about 371.6393076668.

The spelling of 51329251 in words is "fifty-one million, three hundred twenty-nine thousand, two hundred fifty-one".