51478849 has 8 divisors (see below), whose sum is σ = 52300160. Its totient is φ = 50661936.

The previous prime is 51478837. The next prime is 51478859. The reversal of 51478849 is 94887415.

It is a Cunningham number, because it is equal to 372³+1.

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 51478849 - 2¹¹ = 51476801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51478799 and 51478808.

It is not an unprimeable number, because it can be changed into a prime (51478859) 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, 28594 + ... + 30340.

It is an arithmetic number, because the mean of its divisors is an integer number (6537520).

Almost surely, 2^51478849 is an apocalyptic number.

It is an amenable number.

51478849 is a deficient number, since it is larger than the sum of its proper divisors (821311).

51478849 is a wasteful number, since it uses less digits than its factorization.

51478849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199.

The product of its digits is 322560, while the sum is 46.

The square root of 51478849 is about 7174.8762358664. The cubic root of 51478849 is about 372.0000024088. Note that the first 5 decimals are identical.

The spelling of 51478849 in words is "fifty-one million, four hundred seventy-eight thousand, eight hundred forty-nine".