51935520 has 384 divisors, whose sum is σ = 213373440. Its totient is φ = 10321920.

The previous prime is 51935489. The next prime is 51935563. The reversal of 51935520 is 2553915.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1266700 + ... + 1266740.

It is an arithmetic number, because the mean of its divisors is an integer number (555660).

Almost surely, 2^51935520 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 51935520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106686720).

51935520 is an abundant number, since it is smaller than the sum of its proper divisors (161437920).

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

51935520 is a wasteful number, since it uses less digits than its factorization.

51935520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 51935520 is about 7206.6302805125. The cubic root of 51935520 is about 373.0967747421.

The spelling of 51935520 in words is "fifty-one million, nine hundred thirty-five thousand, five hundred twenty".