51368249 has 8 divisors (see below), whose sum is σ = 52149120. Its totient is φ = 50590800.

The previous prime is 51368243. The next prime is 51368279. The reversal of 51368249 is 94286315.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51368249 - 2¹² = 51364153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51368243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54119 + ... + 55059.

It is an arithmetic number, because the mean of its divisors is an integer number (6518640).

Almost surely, 2^51368249 is an apocalyptic number.

It is an amenable number.

51368249 is a deficient number, since it is larger than the sum of its proper divisors (780871).

51368249 is an equidigital number, since it uses as much as digits as its factorization.

51368249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711.

The product of its digits is 51840, while the sum is 38.

The square root of 51368249 is about 7167.1646416139. The cubic root of 51368249 is about 371.7334029473.

The spelling of 51368249 in words is "fifty-one million, three hundred sixty-eight thousand, two hundred forty-nine".