51874289 has 4 divisors (see below), whose sum is σ = 51900660. Its totient is φ = 51847920.

The previous prime is 51874283. The next prime is 51874321. The reversal of 51874289 is 98247815.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29073664 + 22800625 = 5392^2 + 4775^2 .

It is a cyclic number.

It is not a de Polignac number, because 51874289 - 2⁸ = 51874033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51874283) 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, 9974 + ... + 14255.

It is an arithmetic number, because the mean of its divisors is an integer number (12975165).

Almost surely, 2^51874289 is an apocalyptic number.

It is an amenable number.

51874289 is a deficient number, since it is larger than the sum of its proper divisors (26371).

51874289 is a wasteful number, since it uses less digits than its factorization.

51874289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26370.

The product of its digits is 161280, while the sum is 44.

The square root of 51874289 is about 7202.3807869343. The cubic root of 51874289 is about 372.9500923914.

The spelling of 51874289 in words is "fifty-one million, eight hundred seventy-four thousand, two hundred eighty-nine".