51426128 has 20 divisors (see below), whose sum is σ = 107303028. Its totient is φ = 23735040.

The previous prime is 51426127. The next prime is 51426143. The reversal of 51426128 is 82162415.

It can be written as a sum of positive squares in 2 ways, for example, as 32171584 + 19254544 = 5672^2 + 4388^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51426128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51426121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123413 + ... + 123828.

Almost surely, 2^51426128 is an apocalyptic number.

It is an amenable number.

51426128 is an abundant number, since it is smaller than the sum of its proper divisors (55876900).

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

51426128 is a wasteful number, since it uses less digits than its factorization.

51426128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247262 (or 247256 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 51426128 is about 7171.2012940650. The cubic root of 51426128 is about 371.8729669922.

The spelling of 51426128 in words is "fifty-one million, four hundred twenty-six thousand, one hundred twenty-eight".