51770224 has 20 divisors (see below), whose sum is σ = 109423800. Its totient is φ = 23531840.

The previous prime is 51770209. The next prime is 51770227. The reversal of 51770224 is 42207715.

It is a junction number, because it is equal to n+sod(n) for n = 51770192 and 51770201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51770227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146899 + ... + 147250.

It is an arithmetic number, because the mean of its divisors is an integer number (5471190).

Almost surely, 2^51770224 is an apocalyptic number.

It is an amenable number.

51770224 is an abundant number, since it is smaller than the sum of its proper divisors (57653576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51770224 is a wasteful number, since it uses less digits than its factorization.

51770224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294168 (or 294162 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 51770224 is about 7195.1528128317. The cubic root of 51770224 is about 372.7005337370.

Adding to 51770224 its reverse (42207715), we get a palindrome (93977939).

The spelling of 51770224 in words is "fifty-one million, seven hundred seventy thousand, two hundred twenty-four".