51438958 has 8 divisors (see below), whose sum is σ = 77189040. Its totient is φ = 25709280.

The previous prime is 51438949. The next prime is 51438983. The reversal of 51438958 is 85983415.

51438958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6303 + ... + 11941.

It is an arithmetic number, because the mean of its divisors is an integer number (9648630).

Almost surely, 2^51438958 is an apocalyptic number.

51438958 is a deficient number, since it is larger than the sum of its proper divisors (25750082).

51438958 is a wasteful number, since it uses less digits than its factorization.

51438958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10202.

The product of its digits is 172800, while the sum is 43.

The square root of 51438958 is about 7172.0957885405. The cubic root of 51438958 is about 371.9038898818.

The spelling of 51438958 in words is "fifty-one million, four hundred thirty-eight thousand, nine hundred fifty-eight".