51912849 has 16 divisors (see below), whose sum is σ = 73675008. Its totient is φ = 32401152.

The previous prime is 51912841. The next prime is 51912851. The reversal of 51912849 is 94821915.

It is not a de Polignac number, because 51912849 - 2³ = 51912841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51912841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7464 + ... + 12630.

It is an arithmetic number, because the mean of its divisors is an integer number (4604688).

Almost surely, 2^51912849 is an apocalyptic number.

It is an amenable number.

51912849 is a deficient number, since it is larger than the sum of its proper divisors (21762159).

51912849 is a wasteful number, since it uses less digits than its factorization.

51912849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5384.

The product of its digits is 25920, while the sum is 39.

The square root of 51912849 is about 7205.0571822852. The cubic root of 51912849 is about 373.0424785170.

The spelling of 51912849 in words is "fifty-one million, nine hundred twelve thousand, eight hundred forty-nine".