51474643 has 8 divisors (see below), whose sum is σ = 56306880. Its totient is φ = 46667880.

The previous prime is 51474641. The next prime is 51474649. The reversal of 51474643 is 34647415.

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 51474643 - 2¹ = 51474641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51474599 and 51474608.

It is not an unprimeable number, because it can be changed into a prime (51474641) 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, 2005 + ... + 10342.

It is an arithmetic number, because the mean of its divisors is an integer number (7038360).

Almost surely, 2^51474643 is an apocalyptic number.

51474643 is a deficient number, since it is larger than the sum of its proper divisors (4832237).

51474643 is a wasteful number, since it uses less digits than its factorization.

51474643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12737.

The product of its digits is 40320, while the sum is 34.

The square root of 51474643 is about 7174.5831237780. The cubic root of 51474643 is about 371.9898709039.

It can be divided in two parts, 514 and 74643, that added together give a palindrome (75157).

The spelling of 51474643 in words is "fifty-one million, four hundred seventy-four thousand, six hundred forty-three".