51257417 has 2 divisors, whose sum is σ = 51257418. Its totient is φ = 51257416.

The previous prime is 51257411. The next prime is 51257429. The reversal of 51257417 is 71475215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31685641 + 19571776 = 5629^2 + 4424^2 .

It is a cyclic number.

It is not a de Polignac number, because 51257417 - 2¹⁰ = 51256393 is a prime.

It is not a weakly prime, because it can be changed into another prime (51257411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25628708 + 25628709.

It is an arithmetic number, because the mean of its divisors is an integer number (25628709).

Almost surely, 2^51257417 is an apocalyptic number.

It is an amenable number.

51257417 is a deficient number, since it is larger than the sum of its proper divisors (1).

51257417 is an equidigital number, since it uses as much as digits as its factorization.

51257417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 32.

The square root of 51257417 is about 7159.4285386475. The cubic root of 51257417 is about 371.4658600983.

The spelling of 51257417 in words is "fifty-one million, two hundred fifty-seven thousand, four hundred seventeen".