51233129 has 2 divisors, whose sum is σ = 51233130. Its totient is φ = 51233128.

The previous prime is 51233071. The next prime is 51233153. The reversal of 51233129 is 92133215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43099225 + 8133904 = 6565^2 + 2852^2 .

It is a cyclic number.

It is not a de Polignac number, because 51233129 - 2¹² = 51229033 is a prime.

It is a Chen prime.

It is equal to p_3070574 and since 51233129 and 3070574 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 51233098 and 51233107.

It is not a weakly prime, because it can be changed into another prime (51233629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25616564 + 25616565.

It is an arithmetic number, because the mean of its divisors is an integer number (25616565).

Almost surely, 2^51233129 is an apocalyptic number.

It is an amenable number.

51233129 is a deficient number, since it is larger than the sum of its proper divisors (1).

51233129 is an equidigital number, since it uses as much as digits as its factorization.

51233129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 26.

The square root of 51233129 is about 7157.7321128972. The cubic root of 51233129 is about 371.4071785861.

The spelling of 51233129 in words is "fifty-one million, two hundred thirty-three thousand, one hundred twenty-nine".