51500357 has 2 divisors, whose sum is σ = 51500358. Its totient is φ = 51500356.

The previous prime is 51500303. The next prime is 51500377. The reversal of 51500357 is 75300515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45576001 + 5924356 = 6751^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 51500357 - 2⁸ = 51500101 is a prime.

It is a super-2 number, since 2×51500357² = 5304573542254898, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51500377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25750178 + 25750179.

It is an arithmetic number, because the mean of its divisors is an integer number (25750179).

Almost surely, 2^51500357 is an apocalyptic number.

It is an amenable number.

51500357 is a deficient number, since it is larger than the sum of its proper divisors (1).

51500357 is an equidigital number, since it uses as much as digits as its factorization.

51500357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 51500357 is about 7176.3749205292. The cubic root of 51500357 is about 372.0518027254.

The spelling of 51500357 in words is "fifty-one million, five hundred thousand, three hundred fifty-seven".