51672648 has 32 divisors (see below), whose sum is σ = 129476160. Its totient is φ = 17184960.

The previous prime is 51672641. The next prime is 51672659. The reversal of 51672648 is 84627615.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51672641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9478 + ... + 13898.

It is an arithmetic number, because the mean of its divisors is an integer number (4046130).

Almost surely, 2^51672648 is an apocalyptic number.

It is an amenable number.

51672648 is an abundant number, since it is smaller than the sum of its proper divisors (77803512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51672648 is a wasteful number, since it uses less digits than its factorization.

51672648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917 (or 4913 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 51672648 is about 7188.3689387788. The cubic root of 51672648 is about 372.4662323939.

The spelling of 51672648 in words is "fifty-one million, six hundred seventy-two thousand, six hundred forty-eight".