51205093 has 2 divisors, whose sum is σ = 51205094. Its totient is φ = 51205092.

The previous prime is 51205073. The next prime is 51205117. The reversal of 51205093 is 39050215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50936769 + 268324 = 7137^2 + 518^2 .

It is a cyclic number.

It is not a de Polignac number, because 51205093 - 2²¹ = 49107941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51205073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602546 + 25602547.

It is an arithmetic number, because the mean of its divisors is an integer number (25602547).

Almost surely, 2^51205093 is an apocalyptic number.

It is an amenable number.

51205093 is a deficient number, since it is larger than the sum of its proper divisors (1).

51205093 is an equidigital number, since it uses as much as digits as its factorization.

51205093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 51205093 is about 7155.7734033436. The cubic root of 51205093 is about 371.3394185787.

The spelling of 51205093 in words is "fifty-one million, two hundred five thousand, ninety-three".