51004549 has 2 divisors, whose sum is σ = 51004550. Its totient is φ = 51004548.

The previous prime is 51004519. The next prime is 51004553. The reversal of 51004549 is 94540015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48902049 + 2102500 = 6993^2 + 1450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51004549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51004519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25502274 + 25502275.

It is an arithmetic number, because the mean of its divisors is an integer number (25502275).

Almost surely, 2^51004549 is an apocalyptic number.

It is an amenable number.

51004549 is a deficient number, since it is larger than the sum of its proper divisors (1).

51004549 is an equidigital number, since it uses as much as digits as its factorization.

51004549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51004549 is about 7141.7469151462. The cubic root of 51004549 is about 370.8540025119.

The spelling of 51004549 in words is "fifty-one million, four thousand, five hundred forty-nine".