51341551 has 2 divisors, whose sum is σ = 51341552. Its totient is φ = 51341550.

The previous prime is 51341539. The next prime is 51341569. The reversal of 51341551 is 15514315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51341551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51341501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25670775 + 25670776.

It is an arithmetic number, because the mean of its divisors is an integer number (25670776).

Almost surely, 2^51341551 is an apocalyptic number.

51341551 is a deficient number, since it is larger than the sum of its proper divisors (1).

51341551 is an equidigital number, since it uses as much as digits as its factorization.

51341551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1500, while the sum is 25.

The square root of 51341551 is about 7165.3018777997. The cubic root of 51341551 is about 371.6689905365.

Adding to 51341551 its reverse (15514315), we get a palindrome (66855866).

The spelling of 51341551 in words is "fifty-one million, three hundred forty-one thousand, five hundred fifty-one".