51438441 has 8 divisors (see below), whose sum is σ = 68693184. Its totient is φ = 34238000.

The previous prime is 51438407. The next prime is 51438451. The reversal of 51438441 is 14483415.

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 51438441 - 2¹⁸ = 51176297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51438399 and 51438408.

It is not an unprimeable number, because it can be changed into a prime (51438451) 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, 11310 + ... + 15191.

It is an arithmetic number, because the mean of its divisors is an integer number (8586648).

Almost surely, 2^51438441 is an apocalyptic number.

It is an amenable number.

51438441 is a deficient number, since it is larger than the sum of its proper divisors (17254743).

51438441 is a wasteful number, since it uses less digits than its factorization.

51438441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27151.

The product of its digits is 7680, while the sum is 30.

The square root of 51438441 is about 7172.0597459865. The cubic root of 51438441 is about 371.9026439069.

The spelling of 51438441 in words is "fifty-one million, four hundred thirty-eight thousand, four hundred forty-one".