51361851 has 8 divisors (see below), whose sum is σ = 69420880. Its totient is φ = 33772032.

The previous prime is 51361847. The next prime is 51361859. The reversal of 51361851 is 15816315.

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

It is not a de Polignac number, because 51361851 - 2² = 51361847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51361859) 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, 117046 + ... + 117483.

It is an arithmetic number, because the mean of its divisors is an integer number (8677610).

Almost surely, 2^51361851 is an apocalyptic number.

51361851 is a deficient number, since it is larger than the sum of its proper divisors (18059029).

51361851 is a wasteful number, since it uses less digits than its factorization.

51361851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234605.

The product of its digits is 3600, while the sum is 30.

The square root of 51361851 is about 7166.7182866358. The cubic root of 51361851 is about 371.7179689707.

The spelling of 51361851 in words is "fifty-one million, three hundred sixty-one thousand, eight hundred fifty-one".