51419520 has 192 divisors, whose sum is σ = 181396800. Its totient is φ = 13418496.

The previous prime is 51419507. The next prime is 51419531. The reversal of 51419520 is 2591415.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 454984 + ... + 455096.

It is an arithmetic number, because the mean of its divisors is an integer number (944775).

Almost surely, 2^51419520 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 51419520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90698400).

51419520 is an abundant number, since it is smaller than the sum of its proper divisors (129977280).

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

51419520 is a wasteful number, since it uses less digits than its factorization.

51419520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 51419520 is about 7170.7405475306. The cubic root of 51419520 is about 371.8570383717.

The spelling of 51419520 in words is "fifty-one million, four hundred nineteen thousand, five hundred twenty".