51438854 has 8 divisors (see below), whose sum is σ = 77250888. Its totient is φ = 25688560.

The previous prime is 51438847. The next prime is 51438857. The reversal of 51438854 is 45883415.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51438857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13292 + ... + 16719.

It is an arithmetic number, because the mean of its divisors is an integer number (9656361).

Almost surely, 2^51438854 is an apocalyptic number.

51438854 is a deficient number, since it is larger than the sum of its proper divisors (25812034).

51438854 is a wasteful number, since it uses less digits than its factorization.

51438854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30870.

The product of its digits is 76800, while the sum is 38.

The square root of 51438854 is about 7172.0885382154. The cubic root of 51438854 is about 371.9036392415.

The spelling of 51438854 in words is "fifty-one million, four hundred thirty-eight thousand, eight hundred fifty-four".