51738249 has 4 divisors (see below), whose sum is σ = 68984336. Its totient is φ = 34492164.

The previous prime is 51738241. The next prime is 51738257. The reversal of 51738249 is 94283715.

51738249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (51738241) and next prime (51738257).

It is not a de Polignac number, because 51738249 - 2³ = 51738241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51738241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8623039 + ... + 8623044.

It is an arithmetic number, because the mean of its divisors is an integer number (17246084).

Almost surely, 2^51738249 is an apocalyptic number.

It is an amenable number.

51738249 is a deficient number, since it is larger than the sum of its proper divisors (17246087).

51738249 is a wasteful number, since it uses less digits than its factorization.

51738249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17246086.

The product of its digits is 60480, while the sum is 39.

The square root of 51738249 is about 7192.9304876385. The cubic root of 51738249 is about 372.6237872152.

The spelling of 51738249 in words is "fifty-one million, seven hundred thirty-eight thousand, two hundred forty-nine".