51357169 has 2 divisors, whose sum is σ = 51357170. Its totient is φ = 51357168.

The previous prime is 51357167. The next prime is 51357197. The reversal of 51357169 is 96175315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47886400 + 3470769 = 6920^2 + 1863^2 .

It is a cyclic number.

It is not a de Polignac number, because 51357169 - 2¹ = 51357167 is a prime.

It is a super-2 number, since 2×51357169² = 5275117615389122, which contains 22 as substring.

Together with 51357167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51357167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25678584 + 25678585.

It is an arithmetic number, because the mean of its divisors is an integer number (25678585).

Almost surely, 2^51357169 is an apocalyptic number.

It is an amenable number.

51357169 is a deficient number, since it is larger than the sum of its proper divisors (1).

51357169 is an equidigital number, since it uses as much as digits as its factorization.

51357169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28350, while the sum is 37.

The square root of 51357169 is about 7166.3916303814. The cubic root of 51357169 is about 371.7066737105.

The spelling of 51357169 in words is "fifty-one million, three hundred fifty-seven thousand, one hundred sixty-nine".