51429901 has 2 divisors, whose sum is σ = 51429902. Its totient is φ = 51429900.

The previous prime is 51429877. The next prime is 51429919. The reversal of 51429901 is 10992415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41912676 + 9517225 = 6474^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 51429901 - 2¹⁷ = 51298829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51429991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25714950 + 25714951.

It is an arithmetic number, because the mean of its divisors is an integer number (25714951).

Almost surely, 2^51429901 is an apocalyptic number.

It is an amenable number.

51429901 is a deficient number, since it is larger than the sum of its proper divisors (1).

51429901 is an equidigital number, since it uses as much as digits as its factorization.

51429901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 51429901 is about 7171.4643553461. The cubic root of 51429901 is about 371.8820612175.

The spelling of 51429901 in words is "fifty-one million, four hundred twenty-nine thousand, nine hundred one".