51816029 has 2 divisors, whose sum is σ = 51816030. Its totient is φ = 51816028.

The previous prime is 51816019. The next prime is 51816049. The reversal of 51816029 is 92061815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27825625 + 23990404 = 5275^2 + 4898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51816029 is a prime.

It is a super-2 number, since 2×51816029² = 5369801722657682, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51815986 and 51816004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51816019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25908014 + 25908015.

It is an arithmetic number, because the mean of its divisors is an integer number (25908015).

Almost surely, 2^51816029 is an apocalyptic number.

It is an amenable number.

51816029 is a deficient number, since it is larger than the sum of its proper divisors (1).

51816029 is an equidigital number, since it uses as much as digits as its factorization.

51816029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 51816029 is about 7198.3351547424. The cubic root of 51816029 is about 372.8104200402.

The spelling of 51816029 in words is "fifty-one million, eight hundred sixteen thousand, twenty-nine".