51124069 has 2 divisors, whose sum is σ = 51124070. Its totient is φ = 51124068.

The previous prime is 51124063. The next prime is 51124091. The reversal of 51124069 is 96042115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36759969 + 14364100 = 6063^2 + 3790^2 .

It is a cyclic number.

It is not a de Polignac number, because 51124069 - 2⁵ = 51124037 is a prime.

It is a super-2 number, since 2×51124069² = 5227340862233522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51124063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25562034 + 25562035.

It is an arithmetic number, because the mean of its divisors is an integer number (25562035).

Almost surely, 2^51124069 is an apocalyptic number.

It is an amenable number.

51124069 is a deficient number, since it is larger than the sum of its proper divisors (1).

51124069 is an equidigital number, since it uses as much as digits as its factorization.

51124069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 51124069 is about 7150.1097194379. The cubic root of 51124069 is about 371.1434531204.

The spelling of 51124069 in words is "fifty-one million, one hundred twenty-four thousand, sixty-nine".