51225704 has 24 divisors (see below), whose sum is σ = 97054290. Its totient is φ = 25347168.

The previous prime is 51225703. The next prime is 51225731. The reversal of 51225704 is 40752215.

It can be written as a sum of positive squares in only one way, i.e., 40322500 + 10903204 = 6350^2 + 3302^2 .

It is not an unprimeable number, because it can be changed into a prime (51225701) 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 5 ways as a sum of consecutive naturals, for example, 128834 + ... + 129230.

Almost surely, 2^51225704 is an apocalyptic number.

It is an amenable number.

51225704 is a deficient number, since it is larger than the sum of its proper divisors (45828586).

51225704 is a wasteful number, since it uses less digits than its factorization.

51225704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 51225704 is about 7157.2134242315. The cubic root of 51225704 is about 371.3892355638.

Adding to 51225704 its reverse (40752215), we get a palindrome (91977919).

The spelling of 51225704 in words is "fifty-one million, two hundred twenty-five thousand, seven hundred four".