51418648 has 8 divisors (see below), whose sum is σ = 96409980. Its totient is φ = 25709320.

The previous prime is 51418643. The next prime is 51418663. The reversal of 51418648 is 84681415.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51418643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3213658 + ... + 3213673.

Almost surely, 2^51418648 is an apocalyptic number.

It is an amenable number.

51418648 is a deficient number, since it is larger than the sum of its proper divisors (44991332).

51418648 is a wasteful number, since it uses less digits than its factorization.

51418648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427337 (or 6427333 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 51418648 is about 7170.6797446267. The cubic root of 51418648 is about 371.8549363090.

The spelling of 51418648 in words is "fifty-one million, four hundred eighteen thousand, six hundred forty-eight".