51223364 has 6 divisors (see below), whose sum is σ = 89640894. Its totient is φ = 25611680.

The previous prime is 51223357. The next prime is 51223379. The reversal of 51223364 is 46332215.

It can be written as a sum of positive squares in only one way, i.e., 43428100 + 7795264 = 6590^2 + 2792^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402917 + ... + 6402924.

It is an arithmetic number, because the mean of its divisors is an integer number (14940149).

Almost surely, 2^51223364 is an apocalyptic number.

It is an amenable number.

51223364 is a deficient number, since it is larger than the sum of its proper divisors (38417530).

51223364 is a wasteful number, since it uses less digits than its factorization.

51223364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12805845 (or 12805843 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 51223364 is about 7157.0499509225. The cubic root of 51223364 is about 371.3835804338.

Adding to 51223364 its reverse (46332215), we get a palindrome (97555579).

The spelling of 51223364 in words is "fifty-one million, two hundred twenty-three thousand, three hundred sixty-four".