51826240 has 28 divisors (see below), whose sum is σ = 123411996. Its totient is φ = 20730368.

The previous prime is 51826211. The next prime is 51826241. The reversal of 51826240 is 4262815.

It can be written as a sum of positive squares in 2 ways, for example, as 37748736 + 14077504 = 6144^2 + 3752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51826199 and 51826208.

It is not an unprimeable number, because it can be changed into a prime (51826241) 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 3 ways as a sum of consecutive naturals, for example, 80659 + ... + 81298.

Almost surely, 2^51826240 is an apocalyptic number.

It is an amenable number.

51826240 is an abundant number, since it is smaller than the sum of its proper divisors (71585756).

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

51826240 is a wasteful number, since it uses less digits than its factorization.

51826240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161974 (or 161964 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 51826240 is about 7199.0443810272. The cubic root of 51826240 is about 372.8349074253.

The spelling of 51826240 in words is "fifty-one million, eight hundred twenty-six thousand, two hundred forty".