51409448 has 8 divisors (see below), whose sum is σ = 96392730. Its totient is φ = 25704720.

The previous prime is 51409441. The next prime is 51409451. The reversal of 51409448 is 84490415.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28922884 + 22486564 = 5378^2 + 4742^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (51409441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3213083 + ... + 3213098.

Almost surely, 2^51409448 is an apocalyptic number.

It is an amenable number.

51409448 is a deficient number, since it is larger than the sum of its proper divisors (44983282).

51409448 is a wasteful number, since it uses less digits than its factorization.

51409448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426187 (or 6426183 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 51409448 is about 7170.0382146820. The cubic root of 51409448 is about 371.8327571346.

The spelling of 51409448 in words is "fifty-one million, four hundred nine thousand, four hundred forty-eight".