51626020 has 24 divisors (see below), whose sum is σ = 108675000. Its totient is φ = 20600832.

The previous prime is 51626009. The next prime is 51626027. The reversal of 51626020 is 2062615.

It can be written as a sum of positive squares in 4 ways, for example, as 131044 + 51494976 = 362^2 + 7176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51625982 and 51626000.

It is not an unprimeable number, because it can be changed into a prime (51626027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6106 + ... + 11854.

It is an arithmetic number, because the mean of its divisors is an integer number (4528125).

Almost surely, 2^51626020 is an apocalyptic number.

It is an amenable number.

51626020 is an abundant number, since it is smaller than the sum of its proper divisors (57048980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51626020 is a wasteful number, since it uses less digits than its factorization.

51626020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6207 (or 6205 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 51626020 is about 7185.1249119274. The cubic root of 51626020 is about 372.3541641933.

Adding to 51626020 its reverse (2062615), we get a palindrome (53688635).

The spelling of 51626020 in words is "fifty-one million, six hundred twenty-six thousand, twenty".