51890224 has 20 divisors (see below), whose sum is σ = 100674360. Its totient is φ = 25909760.

The previous prime is 51890221. The next prime is 51890261. The reversal of 51890224 is 42209815.

It is not an unprimeable number, because it can be changed into a prime (51890221) 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, 13119 + ... + 16609.

It is an arithmetic number, because the mean of its divisors is an integer number (5033718).

Almost surely, 2^51890224 is an apocalyptic number.

It is an amenable number.

51890224 is a deficient number, since it is larger than the sum of its proper divisors (48784136).

51890224 is a wasteful number, since it uses less digits than its factorization.

51890224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428 (or 4422 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 51890224 is about 7203.4869334233. The cubic root of 51890224 is about 372.9882766982.

The spelling of 51890224 in words is "fifty-one million, eight hundred ninety thousand, two hundred twenty-four".