51404626 has 48 divisors (see below), whose sum is σ = 97589016. Its totient is φ = 20127744.

The previous prime is 51404623. The next prime is 51404677. The reversal of 51404626 is 62640415.

It can be written as a sum of positive squares in 4 ways, for example, as 44876601 + 6528025 = 6699^2 + 2555^2 .

51404626 is a modest number, since divided by 4626 gives 514 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 51404594 and 51404603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199890 + ... + 200146.

Almost surely, 2^51404626 is an apocalyptic number.

51404626 is a deficient number, since it is larger than the sum of its proper divisors (46184390).

51404626 is a wasteful number, since it uses less digits than its factorization.

51404626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 51404626 is about 7169.7019463852. The cubic root of 51404626 is about 371.8211312975.

The spelling of 51404626 in words is "fifty-one million, four hundred four thousand, six hundred twenty-six".