51603696 has 80 divisors (see below), whose sum is σ = 155942400. Its totient is φ = 16293312.

The previous prime is 51603691. The next prime is 51603703. The reversal of 51603696 is 69630615.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51603696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51603691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5065 + ... + 11351.

It is an arithmetic number, because the mean of its divisors is an integer number (1949280).

Almost surely, 2^51603696 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 51603696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77971200).

51603696 is an abundant number, since it is smaller than the sum of its proper divisors (104338704).

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

51603696 is a wasteful number, since it uses less digits than its factorization.

51603696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6323 (or 6311 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 51603696 is about 7183.5712566940. The cubic root of 51603696 is about 372.3004856232.

The spelling of 51603696 in words is "fifty-one million, six hundred three thousand, six hundred ninety-six".