51451600 has 30 divisors (see below), whose sum is σ = 123613430. Its totient is φ = 20580480.

The previous prime is 51451577. The next prime is 51451619. The reversal of 51451600 is 615415.

It can be written as a sum of positive squares in 3 ways, for example, as 6615184 + 44836416 = 2572^2 + 6696^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63915 + ... + 64714.

Almost surely, 2^51451600 is an apocalyptic number.

51451600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51451600 is an abundant number, since it is smaller than the sum of its proper divisors (72161830).

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

51451600 is a wasteful number, since it uses less digits than its factorization.

51451600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128647 (or 128636 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51451600 is about 7172.9770667415. The cubic root of 51451600 is about 371.9343546245.

The spelling of 51451600 in words is "fifty-one million, four hundred fifty-one thousand, six hundred".