51001747 has 2 divisors, whose sum is σ = 51001748. Its totient is φ = 51001746.

The previous prime is 51001729. The next prime is 51001763. The reversal of 51001747 is 74710015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51001747 - 2⁷ = 51001619 is a prime.

It is not a weakly prime, because it can be changed into another prime (51001777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500873 + 25500874.

It is an arithmetic number, because the mean of its divisors is an integer number (25500874).

Almost surely, 2^51001747 is an apocalyptic number.

51001747 is a deficient number, since it is larger than the sum of its proper divisors (1).

51001747 is an equidigital number, since it uses as much as digits as its factorization.

51001747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 51001747 is about 7141.5507419607. The cubic root of 51001747 is about 370.8472112749.

The spelling of 51001747 in words is "fifty-one million, one thousand, seven hundred forty-seven".