51747151 has 2 divisors, whose sum is σ = 51747152. Its totient is φ = 51747150.

The previous prime is 51747139. The next prime is 51747161. The reversal of 51747151 is 15174715.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51747151 - 2¹¹ = 51745103 is a prime.

It is equal to p_3099550 and since 51747151 and 3099550 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51747161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25873575 + 25873576.

It is an arithmetic number, because the mean of its divisors is an integer number (25873576).

Almost surely, 2^51747151 is an apocalyptic number.

51747151 is a deficient number, since it is larger than the sum of its proper divisors (1).

51747151 is an equidigital number, since it uses as much as digits as its factorization.

51747151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4900, while the sum is 31.

The square root of 51747151 is about 7193.5492630551. The cubic root of 51747151 is about 372.6451570064.

The spelling of 51747151 in words is "fifty-one million, seven hundred forty-seven thousand, one hundred fifty-one".