51152644 has 12 divisors (see below), whose sum is σ = 93409344. Its totient is φ = 24464264.

The previous prime is 51152603. The next prime is 51152663. The reversal of 51152644 is 44625115.

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, 277912 + ... + 278095.

It is an arithmetic number, because the mean of its divisors is an integer number (7784112).

Almost surely, 2^51152644 is an apocalyptic number.

It is an amenable number.

51152644 is a deficient number, since it is larger than the sum of its proper divisors (42256700).

51152644 is a wasteful number, since it uses less digits than its factorization.

51152644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556034 (or 556032 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 51152644 is about 7152.1076613821. The cubic root of 51152644 is about 371.2125885204.

Adding to 51152644 its reverse (44625115), we get a palindrome (95777759).

The spelling of 51152644 in words is "fifty-one million, one hundred fifty-two thousand, six hundred forty-four".