51229417 has 2 divisors, whose sum is σ = 51229418. Its totient is φ = 51229416.

The previous prime is 51229393. The next prime is 51229427. The reversal of 51229417 is 71492215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40398736 + 10830681 = 6356^2 + 3291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51229417 is a prime.

It is not a weakly prime, because it can be changed into another prime (51229427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25614708 + 25614709.

It is an arithmetic number, because the mean of its divisors is an integer number (25614709).

Almost surely, 2^51229417 is an apocalyptic number.

It is an amenable number.

51229417 is a deficient number, since it is larger than the sum of its proper divisors (1).

51229417 is an equidigital number, since it uses as much as digits as its factorization.

51229417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 51229417 is about 7157.4728081914. The cubic root of 51229417 is about 371.3982085000.

It can be divided in two parts, 512 and 29417, that added together give a square (29929 = 173²).

The spelling of 51229417 in words is "fifty-one million, two hundred twenty-nine thousand, four hundred seventeen".