51403776 has 88 divisors (see below), whose sum is σ = 141979920. Its totient is φ = 16515072.

The previous prime is 51403741. The next prime is 51403777. The reversal of 51403776 is 67730415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51403777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88800 + ... + 89376.

Almost surely, 2^51403776 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 51403776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70989960).

51403776 is an abundant number, since it is smaller than the sum of its proper divisors (90576144).

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

51403776 is a wasteful number, since it uses less digits than its factorization.

51403776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 51403776 is about 7169.6426689201. The cubic root of 51403776 is about 371.8190818729.

The spelling of 51403776 in words is "fifty-one million, four hundred three thousand, seven hundred seventy-six".