51474644 has 48 divisors (see below), whose sum is σ = 102208512. Its totient is φ = 22505472.

The previous prime is 51474641. The next prime is 51474649. The reversal of 51474644 is 44647415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51474641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230717 + ... + 230939.

It is an arithmetic number, because the mean of its divisors is an integer number (2129344).

Almost surely, 2^51474644 is an apocalyptic number.

It is an amenable number.

51474644 is a deficient number, since it is larger than the sum of its proper divisors (50733868).

51474644 is a wasteful number, since it uses less digits than its factorization.

51474644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 454 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 51474644 is about 7174.5831934685. The cubic root of 51474644 is about 371.9898733128.

The spelling of 51474644 in words is "fifty-one million, four hundred seventy-four thousand, six hundred forty-four".