51058649 has 2 divisors, whose sum is σ = 51058650. Its totient is φ = 51058648.

The previous prime is 51058639. The next prime is 51058669. The reversal of 51058649 is 94685015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31416025 + 19642624 = 5605^2 + 4432^2 .

It is a cyclic number.

It is not a de Polignac number, because 51058649 - 2¹⁶ = 50993113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51058619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25529324 + 25529325.

It is an arithmetic number, because the mean of its divisors is an integer number (25529325).

Almost surely, 2^51058649 is an apocalyptic number.

It is an amenable number.

51058649 is a deficient number, since it is larger than the sum of its proper divisors (1).

51058649 is an equidigital number, since it uses as much as digits as its factorization.

51058649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 51058649 is about 7145.5335000264. The cubic root of 51058649 is about 370.9850765206.

The spelling of 51058649 in words is "fifty-one million, fifty-eight thousand, six hundred forty-nine".