51228370 has 16 divisors (see below), whose sum is σ = 97064640. Its totient is φ = 19412784.

The previous prime is 51228341. The next prime is 51228391. The reversal of 51228370 is 7382215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134622 + ... + 135001.

It is an arithmetic number, because the mean of its divisors is an integer number (6066540).

Almost surely, 2^51228370 is an apocalyptic number.

51228370 is a deficient number, since it is larger than the sum of its proper divisors (45836270).

51228370 is a wasteful number, since it uses less digits than its factorization.

51228370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269649.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 51228370 is about 7157.3996674770. The cubic root of 51228370 is about 371.3956783354.

It can be divided in two parts, 512 and 28370, that added together give a palindrome (28882).

The spelling of 51228370 in words is "fifty-one million, two hundred twenty-eight thousand, three hundred seventy".