51122650 has 24 divisors (see below), whose sum is σ = 98369820. Its totient is φ = 19743360.

The previous prime is 51122633. The next prime is 51122651. The reversal of 51122650 is 5622115.

It can be written as a sum of positive squares in 6 ways, for example, as 5276209 + 45846441 = 2297^2 + 6771^2 .

It is a super-2 number, since 2×51122650² = 5227050686045000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51122651) 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 11 ways as a sum of consecutive naturals, for example, 16179 + ... + 19078.

Almost surely, 2^51122650 is an apocalyptic number.

51122650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51122650 is a deficient number, since it is larger than the sum of its proper divisors (47247170).

51122650 is a wasteful number, since it uses less digits than its factorization.

51122650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35298 (or 35293 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51122650 is about 7150.0104895028. The cubic root of 51122650 is about 371.1400192686.

Adding to 51122650 its reverse (5622115), we get a palindrome (56744765).

The spelling of 51122650 in words is "fifty-one million, one hundred twenty-two thousand, six hundred fifty".