51914257 has 4 divisors (see below), whose sum is σ = 52116516. Its totient is φ = 51712000.

The previous prime is 51914249. The next prime is 51914267. The reversal of 51914257 is 75241915.

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 51322896 + 591361 = 7164^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 51914257 - 2³ = 51914249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51914207) 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, 100744 + ... + 101257.

It is an arithmetic number, because the mean of its divisors is an integer number (13029129).

Almost surely, 2^51914257 is an apocalyptic number.

It is an amenable number.

51914257 is a deficient number, since it is larger than the sum of its proper divisors (202259).

51914257 is a wasteful number, since it uses less digits than its factorization.

51914257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202258.

The product of its digits is 12600, while the sum is 34.

The square root of 51914257 is about 7205.1548907709. The cubic root of 51914257 is about 373.0458510864.

The spelling of 51914257 in words is "fifty-one million, nine hundred fourteen thousand, two hundred fifty-seven".