51748980 has 24 divisors (see below), whose sum is σ = 144897312. Its totient is φ = 13799712.

The previous prime is 51748973. The next prime is 51748987. The reversal of 51748980 is 8984715.

It is an interprime number because it is at equal distance from previous prime (51748973) and next prime (51748987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51748987) 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, 431182 + ... + 431301.

It is an arithmetic number, because the mean of its divisors is an integer number (6037388).

Almost surely, 2^51748980 is an apocalyptic number.

It is an amenable number.

51748980 is an abundant number, since it is smaller than the sum of its proper divisors (93148332).

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

51748980 is a wasteful number, since it uses less digits than its factorization.

51748980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862495 (or 862493 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 51748980 is about 7193.6763897190. The cubic root of 51748980 is about 372.6495473283.

The spelling of 51748980 in words is "fifty-one million, seven hundred forty-eight thousand, nine hundred eighty".