51346657 has 2 divisors, whose sum is σ = 51346658. Its totient is φ = 51346656.

The previous prime is 51346643. The next prime is 51346661. The reversal of 51346657 is 75664315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26306641 + 25040016 = 5129^2 + 5004^2 .

It is a cyclic number.

It is not a de Polignac number, because 51346657 - 2²³ = 42958049 is a prime.

It is not a weakly prime, because it can be changed into another prime (51346627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25673328 + 25673329.

It is an arithmetic number, because the mean of its divisors is an integer number (25673329).

Almost surely, 2^51346657 is an apocalyptic number.

It is an amenable number.

51346657 is a deficient number, since it is larger than the sum of its proper divisors (1).

51346657 is an equidigital number, since it uses as much as digits as its factorization.

51346657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 51346657 is about 7165.6581693519. The cubic root of 51346657 is about 371.6813111548.

It can be divided in two parts, 51346 and 657, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 51346657 in words is "fifty-one million, three hundred forty-six thousand, six hundred fifty-seven".