51027644 has 12 divisors (see below), whose sum is σ = 89980968. Its totient is φ = 25318800.

The previous prime is 51027637. The next prime is 51027649. The reversal of 51027644 is 44672015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51027649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48167 + ... + 49214.

It is an arithmetic number, because the mean of its divisors is an integer number (7498414).

Almost surely, 2^51027644 is an apocalyptic number.

It is an amenable number.

51027644 is a deficient number, since it is larger than the sum of its proper divisors (38953324).

51027644 is a wasteful number, since it uses less digits than its factorization.

51027644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97516 (or 97514 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 51027644 is about 7143.3636334713. The cubic root of 51027644 is about 370.9099686362.

Adding to 51027644 its reverse (44672015), we get a palindrome (95699659).

The spelling of 51027644 in words is "fifty-one million, twenty-seven thousand, six hundred forty-four".