51662228 has 6 divisors (see below), whose sum is σ = 90408906. Its totient is φ = 25831112.

The previous prime is 51662183. The next prime is 51662231. The reversal of 51662228 is 82226615.

It can be written as a sum of positive squares in only one way, i.e., 44328964 + 7333264 = 6658^2 + 2708^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51662194 and 51662203.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6457775 + ... + 6457782.

It is an arithmetic number, because the mean of its divisors is an integer number (15068151).

Almost surely, 2^51662228 is an apocalyptic number.

It is an amenable number.

51662228 is a deficient number, since it is larger than the sum of its proper divisors (38746678).

51662228 is a wasteful number, since it uses less digits than its factorization.

51662228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915561 (or 12915559 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 51662228 is about 7187.6441202942. The cubic root of 51662228 is about 372.4411942663.

The spelling of 51662228 in words is "fifty-one million, six hundred sixty-two thousand, two hundred twenty-eight".