51745144 has 32 divisors (see below), whose sum is σ = 112071600. Its totient is φ = 22136320.

The previous prime is 51745139. The next prime is 51745153. The reversal of 51745144 is 44154715.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15799 + ... + 18790.

Almost surely, 2^51745144 is an apocalyptic number.

It is an amenable number.

51745144 is an abundant number, since it is smaller than the sum of its proper divisors (60326456).

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

51745144 is a wasteful number, since it uses less digits than its factorization.

51745144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34623 (or 34619 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 51745144 is about 7193.4097617194. The cubic root of 51745144 is about 372.6403392951.

Adding to 51745144 its reverse (44154715), we get a palindrome (95899859).

The spelling of 51745144 in words is "fifty-one million, seven hundred forty-five thousand, one hundred forty-four".