51675480 has 144 divisors (see below), whose sum is σ = 177493680. Its totient is φ = 13014144.

The previous prime is 51675473. The next prime is 51675493. The reversal of 51675480 is 8457615.

51675480 is a `hidden beast` number, since 51 + 67 + 548 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 654081 + ... + 654159.

It is an arithmetic number, because the mean of its divisors is an integer number (1232595).

Almost surely, 2^51675480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51675480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88746840).

51675480 is an abundant number, since it is smaller than the sum of its proper divisors (125818200).

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

51675480 is a wasteful number, since it uses less digits than its factorization.

51675480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 51675480 is about 7188.5659209609. The cubic root of 51675480 is about 372.4730368003.

The spelling of 51675480 in words is "fifty-one million, six hundred seventy-five thousand, four hundred eighty".