51227644 has 24 divisors (see below), whose sum is σ = 96774608. Its totient is φ = 23587200.

The previous prime is 51227633. The next prime is 51227653. The reversal of 51227644 is 44672215.

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, 27544 + ... + 29344.

Almost surely, 2^51227644 is an apocalyptic number.

It is an amenable number.

51227644 is a deficient number, since it is larger than the sum of its proper divisors (45546964).

51227644 is a wasteful number, since it uses less digits than its factorization.

51227644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365 (or 2363 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 51227644 is about 7157.3489505542. The cubic root of 51227644 is about 371.3939238743.

Adding to 51227644 its reverse (44672215), we get a palindrome (95899859).

The spelling of 51227644 in words is "fifty-one million, two hundred twenty-seven thousand, six hundred forty-four".