51289633 has 2 divisors, whose sum is σ = 51289634. Its totient is φ = 51289632.

The previous prime is 51289613. The next prime is 51289673. The reversal of 51289633 is 33698215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43983424 + 7306209 = 6632^2 + 2703^2 .

It is a cyclic number.

It is not a de Polignac number, because 51289633 - 2¹⁷ = 51158561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51289592 and 51289601.

It is not a weakly prime, because it can be changed into another prime (51289613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25644816 + 25644817.

It is an arithmetic number, because the mean of its divisors is an integer number (25644817).

Almost surely, 2^51289633 is an apocalyptic number.

It is an amenable number.

51289633 is a deficient number, since it is larger than the sum of its proper divisors (1).

51289633 is an equidigital number, since it uses as much as digits as its factorization.

51289633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 51289633 is about 7161.6780854769. The cubic root of 51289633 is about 371.5436676206.

The spelling of 51289633 in words is "fifty-one million, two hundred eighty-nine thousand, six hundred thirty-three".