51774890 has 8 divisors (see below), whose sum is σ = 93194820. Its totient is φ = 20709952.

The previous prime is 51774883. The next prime is 51774893. The reversal of 51774890 is 9847715.

It can be written as a sum of positive squares in 2 ways, for example, as 51423241 + 351649 = 7171^2 + 593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51774893) 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, 2588735 + ... + 2588754.

Almost surely, 2^51774890 is an apocalyptic number.

51774890 is a deficient number, since it is larger than the sum of its proper divisors (41419930).

51774890 is a wasteful number, since it uses less digits than its factorization.

51774890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5177496.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 51774890 is about 7195.4770515929. The cubic root of 51774890 is about 372.7117304463.

The spelling of 51774890 in words is "fifty-one million, seven hundred seventy-four thousand, eight hundred ninety".