51123944 has 16 divisors (see below), whose sum is σ = 97171620. Its totient is φ = 25211520.

The previous prime is 51123923. The next prime is 51123949. The reversal of 51123944 is 44932115.

It can be written as a sum of positive squares in 2 ways, for example, as 51122500 + 1444 = 7150^2 + 38^2 .

It is a super-2 number, since 2×51123944² = 5227315300230272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51123949) 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 3 ways as a sum of consecutive naturals, for example, 43187 + ... + 44354.

Almost surely, 2^51123944 is an apocalyptic number.

It is an amenable number.

51123944 is a deficient number, since it is larger than the sum of its proper divisors (46047676).

51123944 is a wasteful number, since it uses less digits than its factorization.

51123944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87620 (or 87616 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 51123944 is about 7150.1009783079. The cubic root of 51123944 is about 371.1431506343.

The spelling of 51123944 in words is "fifty-one million, one hundred twenty-three thousand, nine hundred forty-four".