51618052 has 12 divisors (see below), whose sum is σ = 95645340. Its totient is φ = 24290816.

The previous prime is 51618037. The next prime is 51618089. The reversal of 51618052 is 25081615.

It can be written as a sum of positive squares in 2 ways, for example, as 34857216 + 16760836 = 5904^2 + 4094^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51618052.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379477 + ... + 379612.

It is an arithmetic number, because the mean of its divisors is an integer number (7970445).

Almost surely, 2^51618052 is an apocalyptic number.

It is an amenable number.

51618052 is a deficient number, since it is larger than the sum of its proper divisors (44027288).

51618052 is a wasteful number, since it uses less digits than its factorization.

51618052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759110 (or 759108 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 51618052 is about 7184.5704116530. The cubic root of 51618052 is about 372.3350067307.

Adding to 51618052 its reverse (25081615), we get a palindrome (76699667).

The spelling of 51618052 in words is "fifty-one million, six hundred eighteen thousand, fifty-two".