51273800 has 24 divisors (see below), whose sum is σ = 119212050. Its totient is φ = 20509440.

The previous prime is 51273797. The next prime is 51273809. The reversal of 51273800 is 837215.

It can be written as a sum of positive squares in 3 ways, for example, as 43059844 + 8213956 = 6562^2 + 2866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51273800.

It is not an unprimeable number, because it can be changed into a prime (51273809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127985 + ... + 128384.

Almost surely, 2^51273800 is an apocalyptic number.

51273800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51273800 is an abundant number, since it is smaller than the sum of its proper divisors (67938250).

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

51273800 is a wasteful number, since it uses less digits than its factorization.

51273800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256385 (or 256376 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 51273800 is about 7160.5726028021. The cubic root of 51273800 is about 371.5054321074.

The spelling of 51273800 in words is "fifty-one million, two hundred seventy-three thousand, eight hundred".