51619568 has 120 divisors (see below), whose sum is σ = 135762144. Its totient is φ = 18501120.

The previous prime is 51619517. The next prime is 51619597. The reversal of 51619568 is 86591615.

51619568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×51619568³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176030 + ... + 176322.

Almost surely, 2^51619568 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 51619568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67881072).

51619568 is an abundant number, since it is smaller than the sum of its proper divisors (84142576).

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

51619568 is a wasteful number, since it uses less digits than its factorization.

51619568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 326 counting only the distinct ones).

The product of its digits is 64800, while the sum is 41.

The square root of 51619568 is about 7184.6759147508. The cubic root of 51619568 is about 372.3386518014.

The spelling of 51619568 in words is "fifty-one million, six hundred nineteen thousand, five hundred sixty-eight".