51353664 has 112 divisors (see below), whose sum is σ = 147035520. Its totient is φ = 15769600.

The previous prime is 51353629. The next prime is 51353671. The reversal of 51353664 is 46635315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127864 + ... + 128264.

Almost surely, 2^51353664 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 51353664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73517760).

51353664 is an abundant number, since it is smaller than the sum of its proper divisors (95681856).

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

51353664 is a wasteful number, since it uses less digits than its factorization.

51353664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 458 counting only the distinct ones).

The product of its digits is 32400, while the sum is 33.

The square root of 51353664 is about 7166.1470819402. The cubic root of 51353664 is about 371.6982174971.

Adding to 51353664 its reverse (46635315), we get a palindrome (97988979).

The spelling of 51353664 in words is "fifty-one million, three hundred fifty-three thousand, six hundred sixty-four".