51594749 has 2 divisors, whose sum is σ = 51594750. Its totient is φ = 51594748.

The previous prime is 51594713. The next prime is 51594839. The reversal of 51594749 is 94749515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51222649 + 372100 = 7157^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 51594749 - 2²⁴ = 34817533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51594449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25797374 + 25797375.

It is an arithmetic number, because the mean of its divisors is an integer number (25797375).

Almost surely, 2^51594749 is an apocalyptic number.

It is an amenable number.

51594749 is a deficient number, since it is larger than the sum of its proper divisors (1).

51594749 is an equidigital number, since it uses as much as digits as its factorization.

51594749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 51594749 is about 7182.9484893044. The cubic root of 51594749 is about 372.2789680109.

The spelling of 51594749 in words is "fifty-one million, five hundred ninety-four thousand, seven hundred forty-nine".