51748849 has 2 divisors, whose sum is σ = 51748850. Its totient is φ = 51748848.

The previous prime is 51748831. The next prime is 51748883. The reversal of 51748849 is 94884715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38353249 + 13395600 = 6193^2 + 3660^2 .

It is a cyclic number.

It is not a de Polignac number, because 51748849 - 2¹³ = 51740657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51748799 and 51748808.

It is not a weakly prime, because it can be changed into another prime (51748819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25874424 + 25874425.

It is an arithmetic number, because the mean of its divisors is an integer number (25874425).

Almost surely, 2^51748849 is an apocalyptic number.

It is an amenable number.

51748849 is a deficient number, since it is larger than the sum of its proper divisors (1).

51748849 is an equidigital number, since it uses as much as digits as its factorization.

51748849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 46.

The square root of 51748849 is about 7193.6672844941. The cubic root of 51748849 is about 372.6492328801.

The spelling of 51748849 in words is "fifty-one million, seven hundred forty-eight thousand, eight hundred forty-nine".