51998029 has 2 divisors, whose sum is σ = 51998030. Its totient is φ = 51998028.

The previous prime is 51997949. The next prime is 51998033. The reversal of 51998029 is 92089915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46717225 + 5280804 = 6835^2 + 2298^2 .

It is a cyclic number.

It is not a de Polignac number, because 51998029 - 2⁷ = 51997901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51998069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25999014 + 25999015.

It is an arithmetic number, because the mean of its divisors is an integer number (25999015).

Almost surely, 2^51998029 is an apocalyptic number.

It is an amenable number.

51998029 is a deficient number, since it is larger than the sum of its proper divisors (1).

51998029 is an equidigital number, since it uses as much as digits as its factorization.

51998029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 51998029 is about 7210.9658853721. The cubic root of 51998029 is about 373.2463997379.

The spelling of 51998029 in words is "fifty-one million, nine hundred ninety-eight thousand, twenty-nine".