51012544 has 28 divisors (see below), whose sum is σ = 110432088. Its totient is φ = 23187200.

The previous prime is 51012517. The next prime is 51012581. The reversal of 51012544 is 44521015.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 35527 + ... + 36934.

Almost surely, 2^51012544 is an apocalyptic number.

It is an amenable number.

51012544 is an abundant number, since it is smaller than the sum of its proper divisors (59419544).

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

51012544 is a wasteful number, since it uses less digits than its factorization.

51012544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72484 (or 72474 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51012544 is about 7142.3066302141. The cubic root of 51012544 is about 370.8733787107.

Adding to 51012544 its reverse (44521015), we get a palindrome (95533559).

The spelling of 51012544 in words is "fifty-one million, twelve thousand, five hundred forty-four".