51730144 has 24 divisors (see below), whose sum is σ = 104598648. Its totient is φ = 25165440.

The previous prime is 51730139. The next prime is 51730153. The reversal of 51730144 is 44103715.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20662 + ... + 23029.

It is an arithmetic number, because the mean of its divisors is an integer number (4358277).

Almost surely, 2^51730144 is an apocalyptic number.

It is an amenable number.

51730144 is an abundant number, since it is smaller than the sum of its proper divisors (52868504).

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

51730144 is a wasteful number, since it uses less digits than its factorization.

51730144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43738 (or 43730 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 51730144 is about 7192.3670651601. The cubic root of 51730144 is about 372.6043285390.

Adding to 51730144 its reverse (44103715), we get a palindrome (95833859).

It can be divided in two parts, 5 and 1730144, that multiplied together give a triangular number (8650720 = T₄₁₅₉).

The spelling of 51730144 in words is "fifty-one million, seven hundred thirty thousand, one hundred forty-four".